Bio 473 Exam 2 UPDATED Exam Questions
and CORRECT Answers
pulmonary circulation - CORRECT ANSWER - pump on the right receives deoxygenated
blood from the body, then pumps that blood to the lungs
systemic circulation - CORRECT ANSWER - pump on the left receives oxygenated blood
from the lungs, then pumps that blood to the body
valves open and close due to - CORRECT ANSWER - pressure changes
Flow of blood through the heart - CORRECT ANSWER - Right atrium -> right AV valve
-> right ventricle -> pulmonary semilunar valve -> pulmonary artery -> lungs -> pulmonary vein
-> left atrium -> left AV valve -> left ventricle -> aorta -> organs -> veins -> vena cava -> right
atrium
first heart sound is due to - CORRECT ANSWER - AV valves close
second heart sound is due to - CORRECT ANSWER - semilunar valves close
systole - CORRECT ANSWER - heart muscles contracting
diastole - CORRECT ANSWER - heart muscles relaxing
driving force for blood pressure in large arteries and powers blood flow through vessels -
CORRECT ANSWER - ventricular systole
systolic pressure - CORRECT ANSWER - pressure in an artery while the heart is
contracting
, diastolic pressure - CORRECT ANSWER - pressure in an artery while the heart is relaxing
hypertension - CORRECT ANSWER - chronic high blood pressure
negative feedback loops - CORRECT ANSWER - self-correcting pathways, how the body
maintains homeostasis
baroreceptors - CORRECT ANSWER - specialized sensory neurons that monitor blood
pressure
if blood pressure increases - CORRECT ANSWER - - more pressure on baroreceptors
- more action potentials
- action potentials transmitted to CNS
if blood pressure decreases - CORRECT ANSWER - - fewer action potentials
vasomotor center - CORRECT ANSWER - signals to adjust the diameter of the blood
vessels
vasodilation - CORRECT ANSWER - blood vessels become wider
vasoconstriction - CORRECT ANSWER - blood vessels become smaller
cardiac control center - CORRECT ANSWER - two branches, the cardioacceleratory and
cardioinhibitory center, which function to increase and decrease heart rate
renin-angiotensin-aldosterone system - CORRECT ANSWER - - respond to blood
pressure changes by releasing the hormone renin when decreased stretch is perceived
and CORRECT Answers
pulmonary circulation - CORRECT ANSWER - pump on the right receives deoxygenated
blood from the body, then pumps that blood to the lungs
systemic circulation - CORRECT ANSWER - pump on the left receives oxygenated blood
from the lungs, then pumps that blood to the body
valves open and close due to - CORRECT ANSWER - pressure changes
Flow of blood through the heart - CORRECT ANSWER - Right atrium -> right AV valve
-> right ventricle -> pulmonary semilunar valve -> pulmonary artery -> lungs -> pulmonary vein
-> left atrium -> left AV valve -> left ventricle -> aorta -> organs -> veins -> vena cava -> right
atrium
first heart sound is due to - CORRECT ANSWER - AV valves close
second heart sound is due to - CORRECT ANSWER - semilunar valves close
systole - CORRECT ANSWER - heart muscles contracting
diastole - CORRECT ANSWER - heart muscles relaxing
driving force for blood pressure in large arteries and powers blood flow through vessels -
CORRECT ANSWER - ventricular systole
systolic pressure - CORRECT ANSWER - pressure in an artery while the heart is
contracting
, diastolic pressure - CORRECT ANSWER - pressure in an artery while the heart is relaxing
hypertension - CORRECT ANSWER - chronic high blood pressure
negative feedback loops - CORRECT ANSWER - self-correcting pathways, how the body
maintains homeostasis
baroreceptors - CORRECT ANSWER - specialized sensory neurons that monitor blood
pressure
if blood pressure increases - CORRECT ANSWER - - more pressure on baroreceptors
- more action potentials
- action potentials transmitted to CNS
if blood pressure decreases - CORRECT ANSWER - - fewer action potentials
vasomotor center - CORRECT ANSWER - signals to adjust the diameter of the blood
vessels
vasodilation - CORRECT ANSWER - blood vessels become wider
vasoconstriction - CORRECT ANSWER - blood vessels become smaller
cardiac control center - CORRECT ANSWER - two branches, the cardioacceleratory and
cardioinhibitory center, which function to increase and decrease heart rate
renin-angiotensin-aldosterone system - CORRECT ANSWER - - respond to blood
pressure changes by releasing the hormone renin when decreased stretch is perceived
