Arteries always travel away from the heart... True (False) Capillaries always tr
ID: 84623 • Letter: A
Question
Arteries always travel away from the heart... True (False) Capillaries always travel towards the heart... (True) (False) Blood is blue-colored until it is exposed to the air. (True) (False) The heart can regulate its own heartbeat. (True)(False) Blood from areas of the body above the diaphragm enters the heart through the superior vena cava. (True) (False) The right ventricle pumps oxygen-rich blood to the entire body. (True) (False) The function of the sinoatrial node... (a) Generates currents that regulate the heartbeat (b) Gatekeeper that slows down cardiac currents before ventricle contraction (c) Vessel that supplies the cardiac muscle with oxygen (d) One-way door that directs the blood flow from the right atrium to the right ventricle Which is not true of the bicuspid valve? (a) Separates the left atrium and left ventricle (b) Has two flaps when viewed from above (c) Lubricates the heart and prevents damage due to shock (d) Helps blood flow from the left atrium to the left ventricle, instead of vice-versa The membrane that surrounds and protects the heart is called the... What are the symptoms of a heart attack? How are they different in men than women? How is a heart murmur diagnosed?Explanation / Answer
Answer 3. True
These are the blood vessels which carries blood away from the heart.
Answer 4: False
Capillaries are microscopic blood vessels that connect small arteries and small veins within the tissues. Substances move in and out of the capillary walls as the blood exchanges materials with the cells.
Answer 5 : False
The ability of hemoglobin to bind to oxygen is so strong that blood is always red if it has recently been exposed to oxygen. Blood may become dark red or brown, but it can never be blue.
Answer 6: True
It is spontaneous rhythmic contraction and relaxation of the heart to pump out and receive blood to and from the body. when the heart beats, first two artia contract at the same time; then two ventricles contract at the same time. Then all chambers relax. The heart contracts or beats about 70 times a minute.
Answer 7: True
The superior vena cava is a large-diameter (24 mm), yet short, vein that receives venous return from the upper half of the body, above the diaphragm.
Answer 8: False
The left ventricle pumps the oxygen-rich blood through the aortic valve into the aorta, the main artery that takes oxygen-rich blood out to the rest of the body.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.