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Biology Chapter-47

chapter 47 bio study cards

QuestionAnswer
Distinguish the relationship between: ventricle and atrium Each side of the heart is divided into an upper chamber (an atrium) and a lower chamber (a ventricle).
Distinguish the relationship between: sinoatrial node, atrioventricular node The sinoatrial node and the atrioventricular node produce electrical impulses that cause cardiac muscles to contract during a heartbeat
Distinguish the relationship between: systolic pressure, diastolic pressure . Systolic pressure is the amount of blood pressure that occurs when the ventricles contract, and diastolic pressure is the amount of blood pressure that occurs when the ventricles relax.
Distinguish the relationship between: arteriole, venule The arterioles are small blood vessels that branch into tiny vessels called capillaries. Blood flows through capillaries that merge to form larger vessels called venules.
Which of the following is most important to the heartbeat? a. aortic valve b. sinoatrial node c. lymph node d. tricuspid valve B. sinoatrial node
During its circulation from the left atrium to the left ventricle, what percentage of the blood enters the pulmonary circulation? A. 25% B. 50% C. 100% D. None of the above D. None of the above
Exchange of nutrients and waste between bloos and body tissues occurs across A. arterioles B. capillaries C. arteries D. veins B. Capillaries
Which of the following characteristics is unique to pulmonary circulation? A. capillaries that exchange gasses with surrounding tissue B. arteries that carry blood away from the heart C. an artery that originates at the right ventricle C. an artery that originates at the right ventricle
The lymphatic system is important for the normal function of the body because it A. carries newly formed blood to the cardiovascular system B.returns excess intercellular fluid to the cardiovascular system B. returns excess intercellular fluid to the cardiovascular system
Distinguish between pulmonary circulation and systematic circulation In pulmonary circulation blood circulates between the heart and lungs. In systemic circulation blood circulates throughout the body
Trace the flow of blood through the heart steps 1-3 1. deoxygenated blood returns to heart through superior and inferior vena cava 2. blood flows into right atrium 3. blood flows through tricuspid valve into right ventricle
Trace the flow of blood through the heart steps 4-5 4. blood flows through pulmonary valve into pulmonary arteries and out into lungs 5. blood returns to heart through lungs into pulmonary veins into left atrium
Trace the flow of blood through the heart steps 6-7 6. oxygenated blood flows through mitral valve into left ventricle 7. blood flows through aortic valve into aorta and then out to rest of the body
Describe the function of the lymphatic system It returns fluids that have collected in the tissues to the bloodstream. It also traps foreign particles,microorganisms, and other tissue debris.
CRITICAL THINKING: If the aortic valve could not close completely, would the diastolic pressure or systolic pressure be affected the most? Explain Diastolic; if blood flowed back into the left ventricle after contraction, less blood would remain in the arteries, reducing the blood pressure when the heart is relaxed.
Refer to Diagram 47- A and label letters A- I A. superior vena cava B. R. Atrium C. R. Ventricle D. Inferior Vena Cava E. Aorta F. Pulmonary trunk G. L. Atrium H. Pulmonary Veins I. L. Ventricle
How would a defect of the mitral valve affect circulation? A defect would delay circulation to the pulmonary artery
Created by: angelicaunpingco
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