1-3. Deoxygenated blood enters the heart through 3 vessels the superior vena cava, the inferior vena cave and the coronary sinus.
(The superior vena cava carries blood from the upper limbs, head and the upper torso. The inferior vena cava carries blood from the lower limbs, the pelvis and the abdomen. The coronary sinus on the other hand carries blood from the coronary circulation, which is the circulation that nourishes the heart wall.)
4. It then enters a chamber called the Right Atrium.
(The right atrium is small and has thin muscle lining. It is one of the two receiving chambers of the heart. It is, as the name suggests, on the right side on the upper area of the heart.)
5. and passes through the tricuspid valve.
(It is also known as the right atrioventricular valve. Its main function is to prevent back flow of blood. It is made up of 3 valves, which look like flaps.)
6. The blood then enters a chamber called the right ventricle.
(One of the two pumping chambers of the heart. The muscles are thicker than those you would find on the atria. It is the right lower chamber of the heart)
7. and passes up through the pulmonary semilunar valve.
(It was named as such because this is the valve that opens into the pulmonary circuit. It is sometimes referred to as the pulmonic valve. It also has three cusps. This valve opens during ventricular systole.)
8. and Pulmonary trunk.
(This is considered as the first vessel of the pulmonary circuit because it is at this point where the blood makes its way to the lungs to be oxygenated. It is also known as the main pulmonary artery. It is one of the major vessels of the human heart.)
9. The area splits into the right and left pulmonary artery.
(The pulmonary arteries are the only arteries in the body that carry unoxygenated blood or deoxygenated blood. They are considered arteries despite this because they carry blood away from the heart.)
10. Blood then enters the right and left lung where oxygen is picked up.
(As the blood picks up oxygen, it releases carbon dioxide during respiration. The arteries are divided further into really small capillaries, which have extremely thin walls.)
11. The oxygenated blood then reenters the heart through the right and left pulmonary veins.
(Like pulmonary arteries, pulmonary veins are unique because they are the only veins in the body that carry oxygenated blood. They are considered as veins because they carry blood towards the heart.)
12. It enters a chamber called the left atrium.
(The right atrium is the second of the two receiving chambers. It differs from the left because on this side of the heart, it receives oxygenated blood which come from the pulmonary veins.)
13. and passes through the bicuspid valve.
(Named as such because it has two cusps. It is also known as the bicuspid aortic valve, the mitral valve or the left atrioventricular valve. This valve opens during diastole and closes during systole.)
14. The blood then enters a chamber called the left ventricle.
(The left ventricle is the second of the two pumping chambers. It has thicker muscles than the right ventricle because it has to pump blood all around the body. The right ventricle only has to pump blood into the lungs.)
15. and pushes up through the aortic semilunar valve.
(Also known simply as the aortic valve, it has 3 cusps. It opens as the pressure builds up in the left ventricle. As the pressure decreases when systole ends, the aortic valve will close. The opening and closing of the aortic valve makes the second heart sound.)
16. Blood will then enter the Aorta.
(The aorta is the largest artery in the human body. It has four sections; ascending aorta, aortic arch, descending aorta and abdominal aorta. )
17. If it is going to move to the upper part of the body, blood will exit through the Brachiocephalic trunk,
(The brachiocephalic trunk is the first and the biggest branch of the aortic arch. It splits into smaller arteries called the right common carotid artery and the right subclavian artery. It supplies blood to the right side of the head, neck and right upper limb.)
18. Left common carotid artery.
(This artery is one of the two carotid arteries. It supplies blood to the left side of the head and the neck. Unlike the right common carotid artery, it stems directly from the aortic arch.)
19. Left subclavian artery.
(The left subclavian artery supplies blood to the upper limbs on the left side of the body. It also stems directly from the aortic arch, unlike its counterpart the right subclavian arteries.
20. If it is going to the lower part of the body, blood will go through the descending aorta.
(The descending aorta is also called the thoracic aorta. It continues from the aortic arch. It supplies blood to lower half of the body. As it leaves the thorax, it becomes the abdominal aorta)
The condition in which an individual has three copies of a chromosome is known as
What are introns and Exons??
Process by which a cell takes in a substance by surrounding it with the cell membrane; active transport
Which is the best description of sexual reproduction in plants
Plants reproduce sexually through their flowers. The flowers have both the male and the female organs. Pollens contain the male gametes and the stimage is a long tube connecting to the female organ of ovary that has the female gametes. The pollen grains need to stick to the stigma for the pollination to begin. This can happen in two ways:
a. Self-pollination: When the pollens of the same plant or flower end up on its stigma. This can happen by the force of wind.
b. Cross-pollination: When the pollens of one plant end up on the stigma of the other plant's flower. This happens when insects while visiting a flower get pollen grains stuck on their body and deposit it at the stigma of the other plant's flower when they sit on it.
The best example would be of the Hibiscus and the Yucca plant flower, each of which gets pollinated by insects.
Some isotopes are_____ , which makes them suitable for medical imaging procedures.
Answer:
Isotopes such as fluorine-18, gallium-67, krypton-81m, rubidium-82, nitrogen-13, technetium-99m, indium-111, iodine-123.
Explanation:
For diagnostics, medical imaging radiopharmaceuticals are used intravenously or orally. After which external detectors catch the images from the radiation that is emitted from these isotopes also used in MRI and CT scanners.
Iodine 123 is used for examining the whole body part. In developed countries about 26 % of the population use 2%/ year of these medications for the therapies, and these nuclear medicines were developed in the 1950s by physicians who emphasized there use of Iodine 131 for the treatment of thyroid disease.
These isotopes consist of molybdenum-99, which has half-life 66 hours,
The maximum velocity (vmax) of an enzymatic reaction is an important piece of information regarding how the enzyme works. what series of measurements can be taken in order to infer the maximum velocity of an enzyme-catalyzed reaction
Particular care must be taken when using radiation for medical imaging. this is the result of radiation's ability to create __________ in human tissue and possible biochemical changes.
a. ionizations
b. radio waves
c. sound waves
d. thermal changes
The pancreatic duct delivers chemicals to what part of the digestive system
Answer:
Pancreatic duct delivers chemicals to duodenum of small intestine.
Explanation:
Pancreatic duct is the complex structure, also called the hepatopancreatic duct. It is formed of pancreatic duct itself along with common bile duct, carrying bile juice from liver, and opens into the lesser curvature of duodenum.
The pancreatic duct delivers pancreatic juice, contains a lot of enzymes like amylase, lipase, DNAase, RNAase, carboxypeptidase, aminopeptidase etc and bile juice containing bile salts and cholesterol, with heavy metal ions, and bile pigments etc.
Naphthylamine is a carcinogen compound found in cigarette smoke. it chemical modifies dna, distorting the dna helix. what cellular mechanism would you expect to be involved in fixing dna damaged by naphthylamine
What happens as a direct result of an endangered species dying out ?
A. Loss of biodiversity
B. Ecosystem balance
C. Habitat loss
D. Climate change
Answer: A. Loss of biodiversity
Endangered species are those animal or plant species which are at risk of being extinct. The number or population of such species decreases either rapidly or suddenly due to loss of habitat, migration, hunting, poaching, climate change and because of other reasons.
The loss of endangered species from the native habitat can directly reduce the available biodiversity.
Answer:
Loss of biodiversity
Explanation:
Memories that are related to specific life experiences, such as recalling the events of a vacation, are called __________ memories.
Answer:
Memories that are related to specific life experiences, such as recalling the events of a vacation, are called episodic memories.
Explanation:
Human memory is composed of different types of memory. Episodic memory require recollections of a specific event or an episode for remembering events that occurred during a vacation, People associates particular details with an episodic memory, such as how they felt, the time and place, and other particulars. Thanks to this memory we have the ability to recall and mentally re-experience specific episodes from one's personal past, the individual is able to re-experience individual events. For example people can remember who was on vacation, where it occurred, and their own personal interactions.
______ vision is the vision that identifies specific objects.
Final answer:
Objective vision is the ability to identify specific objects through sight, which is enabled by the complex interaction between the eyes and the brain.
Explanation:
“Objective vision” is the type of vision that identifies specific objects. Vision is crucial for many aspects of life and is the ability to detect light and see. The eye and the brain play essential roles in this sensory experience, allowing us to see in color, and three dimensions, and focus on various distances. Vision issues like myopia and hyperopia can be corrected with optical lenses or surgery. Animals and humans have evolved complex visual systems that prioritize vital visual information, making vision one of the most important senses. Around one-third of the human cerebral cortex is dedicated to processing visual information, highlighting the significance of vision in our daily lives.
Is a jellyfish unicellular or multicellular?
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1. Boron is to the immediate left of carbon in the same row in the periodic table. Which of the following statements compares the radius and pull exerted by the protons of boron and carbon atoms?
Boron has a smaller radius and the protons in carbon exert a greater pull.
Boron has a larger radius and the protons in carbon exert a greater pull.
Boron has a smaller radius and the protons in carbon exert less pull.
Boron has a larger radius and the protons in carbon exert less pull.
2. Which of the following is a compound?
Cl2
H2O
He
H2
1. Boron has a smaller radius and the protons in carbon exert a greater pull.
2. H2O
1. Boron and carbon have the same number of electron shells, but boron has one less proton in its nucleus than carbon. This means that boron has a smaller radius than carbon due to a weaker nuclear charge, but carbon has a greater pull exerted by its protons due to a stronger nuclear charge.
2. A compound is a substance that consists of two or more different elements chemically bonded together in a fixed ratio.
Cl2 and H2 are both molecules, but they are not compounds because they consist of only one element (chlorine and hydrogen, respectively).
He is a noble gas and exists as individual atoms, not as a compound.
What two layers of the egg must the sperm penetrate to reach the egg's plasma membrane?
The human immunodeficiency virus (hiv) that causes the disease known as aids selectively infects ________ cells.
The human immunodeficiency virus (HIV) that causes the disease known as aids selectively infects helper T cells (CD4+).
This retrovirus also infects macrophages and dendritic cells. When CD4+ T cell numbers decrease below a critical level (due to the killing of this cells with different mechanisms), cell-mediated immunity is lost. As a result, the body becomes progressively more susceptible to infections, leading to the development of AIDS.
HIV can be transmitted only via body fluids like blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk, which means that people usually get or transmit HIV through sexual behaviours and use of the needle. For HIV infection, these fluids must come in direct contact with a mucous membrane or damaged tissue. Another way is to be directly injected into the bloodstream (from a needle for example).
What do we call an organized profile of a person's chromosomes?
Why is gallbladder positioned so closely to the liver in frog?
What Are Genes?
A. the observable characteristic
B. the expressed trait
C. the basic unit on inheritance
D. the measurable factor
PLEASE HELP Can lip print evidence prove that an individual committed a crime can lip print evidence be used to exonerate an individual explain?
Lip print evidence can potentially contribute to proving that an individual committed a crime, or it may be used to exonerate someone, but it cannot conclusively prove guilt or innocence on its own. It's a type of forensic evidence that, like fingerprints, can be unique to an individual and may place a person at a crime scene.
Forensic evidence, such as lip prints, is often part of the puzzle that investigators piece together when solving a crime. Lip prints, known as cheiloscopy, are the pattern of lines on the lips that are unique to each person. Just as fingerprints can be used to identify individuals, lip prints can also serve as a means of identification. However, the presence of someone's lip prints at a crime scene does not, by itself, prove that the person committed the crime. It can suggest that the individual was present, but additional evidence is generally needed to establish guilt beyond a reasonable doubt. Similarly, if an individual's lip prints are not found at a crime scene, this might help to exonerate them, but it is not definitive proof of innocence either, as the perpetrator might not have left any lip prints, or they could have been removed or obscured. The use of lip print evidence in court depends on the expert testimony that establishes the relevance and reliability of the method used to obtain and interpret the lip prints.
What neurotransmitter systems do methylated amphetamines affect?
Methamphetamine is neurotoxic to dopaminergic neurons in the human’s midbrain. It increases the amount of the dopamine in the brain and as a result, produces the euphoria feeling that many people experience. It is also indicated that high-dose methamphetamine use can be neurotoxic to serotonin neurons (with the potential of damaging neurons).
The lac repressor in bacteria is analogous to _____ in eukaryotes. genes general transcription factors, such as tfiid specific transcription factors the p21 cdk inhibitor
What two processes of digestion begin in the mouth how do they differ?
Adipose tissue that surrounds organs in the abdomen is known as
The rabies virus is most commonly transferred through what?
Saliva
Rabies virus is an infectious virus which causes rabies in human and animals. Rabies is transmitted mostly through the saliva of infected animals such as birds and bats. Transmission of the virus through the human saliva is rare. Signs and symptoms of rabies virus include fever, headache, partial paralysis, and vomiting.
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1. Based on Dalton's atomic theory, which of the following is true about all atoms of the same element?
They have different masses.
They have the same properties.
They can be divided into molecules.
They are composed of visible matter.
2. Boron is to the immediate left of carbon in the same row in the periodic table. Which of the following statements compares the radius and pull exerted by the protons of boron and carbon atoms?
Boron has a smaller radius and the protons in carbon exert a greater pull.
Boron has a larger radius and the protons in carbon exert a greater pull.
Boron has a smaller radius and the protons in carbon exert less pull.
Boron has a larger radius and the protons in carbon exert less pull.
the condition known as _____ is characterized by hypertension, edema, and proteinuria.
a. preeclampsia
b. uterine prolapse
c. oophorectomy
d. eclampsia
A. Pre-eclampsia
Pre-eclampsia also known as pregnancy induced hypersion or toxemia. It is a pathological condition in pregnancy that is characterized by hypertension, edema and proteinuria. However, pre-eclampsia is a symptom that is associated with late pregnancy that encompasses both convulsive and non-convulsive stage.
Dr. proctor is conducting an experiment to see if hummingbirds will visit red flowers more or less often than they visit yellow ones. what will be the independent variable in dr. proctor's experiment
Final answer:
The independent variable in Dr. Proctor's experiment is the color of the flowers, specifically whether they are red or yellow.
Explanation:
In Dr. Proctor's experiment, the independent variable is the color of the flowers, specifically whether they are red or yellow. The independent variable is the variable that is manipulated or changed by the researcher in order to observe its effect on the dependent variable, which is the variable being measured or observed. In this experiment, Dr. Proctor is testing whether hummingbirds will visit red flowers more or less often than yellow flowers, so the color of the flowers is the independent variable.
Which of the following affects the speed of a planet's revolution?
Shape of the planet
Gravity of the sun
Temperature of the sun
Atmosphere of the planet
The gravity of the sun affects the speed of a planet's revolution.
What is revolution?Revolution refers to the orbital movement of a celestial body, such as a planet, around another object, typically a star. It is the path or trajectory followed by the celestial body as it completes a full orbit around its central object.
During revolution, the celestial body maintains a relatively constant distance and orientation with respect to the central object due to the gravitational attraction between them. This orbital motion defines the planet's year or orbital period, which is the time it takes for the planet to complete one revolution. The revolution of a planet is a fundamental aspect of its motion within a solar system or galaxy.
The speed at which a planet revolves around its star, such as the sun, is primarily determined by the gravitational pull between the planet and its star. The strength of the gravitational force depends on the mass of the star and the distance between the planet and the star. According to Kepler's laws of planetary motion, planets that are closer to their star experience a stronger gravitational force, leading to higher orbital speeds.
Conversely, planets that are farther away experience a weaker gravitational force, resulting in slower orbital speeds. Therefore, the gravity of the sun directly influences the speed of a planet's revolution around it.
Learn more about revolution, here:
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Which of the following comparisons would be an inaccurate analogy between prokaryotic cells and eukaryotic cells?
A) A eukaryotic cell is like a college campus while prokaryotic cell is like a one-room schoolhouse
B) A eukaryotic cell is like a flip phone while a prokaryotic cell is like a iPhone
C) A eukaryotic cell is like the mall while a prokaryotic cell is like Walmart
D) A eukaryotic cell is like a car while a prokaryotic cell is like a bicycle