BMS 110 EXAM 3-MSU QUESTIONS WITH ACCURATE
ANSWERS
AV bundle correct answer nervous tissue branch just before bifurcation into R/L
bundle branches
AV node correct answer base of right atrium, receives signal from SA node and
transfers signal down all remaining checkpoints
Be able to tell what the parts of the ECG relate to in the heart correct answer P
wave-SA node fires, atrial cell depolarization
QRS complex-created by simultaneous depolarization of ventricular cells
T wave-ventricular cells relax and repolarize, marks return to diastole
P-R interval-
Q-T interval-total time of ventricular contraction and relaxation
Be able to trace CO2 and O2 levels in circulation correct answer Alveoli (external
respiration)-> O2 -> left atrium of heart -> O2-> systemic tissue cell (internal
respiration)->CO2-> right atrium of heart-> CO2-> alveoli
Be able to trace the pathway of blood in the heart and tell about oxygen and
carbon dioxide contents, nutrients, and waste for eachother correct answer
deoxygenated blood from body enters heart through vena cava, enters right
atrium, through tricuspid valve, to right ventricle, through pulmonary valve, to
pulmonary artery, to lungs, oxygenated blood from lungs enters heart through
pulmonary veins, enters left atrium, through bicuspid valve, to left ventricle,
through aortic valve, to aorta, to body
,coronary circulation correct answer circulation of blood in blood vessels of the
heart
Difference between pulmonary veins and arteries compared to other veins and
arteries correct answer pulmonary veins: carry oxygen from lungs to heart
pulmonary arteries: carry deoxygenated blood away from heart to the lungs
usually arteries are oxygenated and veins are deoxygenated (flipped)
How do capillaries exchange things correct answer slowest blood flow, takes time
for nutrients and waste to exchange
How do chemicals damage the lungs especially smoking correct answer effect on
cilia in the bronchioles, stimulates mucus production, kills phagocytes
How do you prevent hemolytic disease correct answer Anti-D immunoglobin
injection
How does the CV system maintain homeostasis correct answer (Blood) transport
of gases, nutrients, hormones, waste products, ions, etc.; clot formation; and
temperature regulation
How does the structure of red blood cells relate to their function correct answer
circle-normal
banana shape-sickle cell
, How is oxygen and carbon dioxide carried in blood and know roughly the quantity
(greatest, least, etc) correct answer carried by erythrocytes
low-oxygen
high-carbon dioxide
how is the heartbeat regulated correct answer medulla: regulates resting blood
pressure
baroreceptor reflex: keeps blood pressure within normal limits in the face of
sudden changes
How many oxygen are carried by each hemoglobin molecule and why correct
answer depends on pH level of tissues
how much O2 there is compared to CO2
temperature of tissues
intercalated discs correct answer support synchronized contraction of cardiac
tissue
Know the progression of the bronchial tree and the anatomical changes to the
epithelial cells and amount of smooth muscle correct answer trachea splits into 2
tubes called primary bronchi, then that divides into secondary bronchi(in lungs;
right bronchus divides into 3, left into 2), branching keeps getting smaller as tubes
extend farther from primary bronchus
Smooth muscle increases as it gets further down
ANSWERS
AV bundle correct answer nervous tissue branch just before bifurcation into R/L
bundle branches
AV node correct answer base of right atrium, receives signal from SA node and
transfers signal down all remaining checkpoints
Be able to tell what the parts of the ECG relate to in the heart correct answer P
wave-SA node fires, atrial cell depolarization
QRS complex-created by simultaneous depolarization of ventricular cells
T wave-ventricular cells relax and repolarize, marks return to diastole
P-R interval-
Q-T interval-total time of ventricular contraction and relaxation
Be able to trace CO2 and O2 levels in circulation correct answer Alveoli (external
respiration)-> O2 -> left atrium of heart -> O2-> systemic tissue cell (internal
respiration)->CO2-> right atrium of heart-> CO2-> alveoli
Be able to trace the pathway of blood in the heart and tell about oxygen and
carbon dioxide contents, nutrients, and waste for eachother correct answer
deoxygenated blood from body enters heart through vena cava, enters right
atrium, through tricuspid valve, to right ventricle, through pulmonary valve, to
pulmonary artery, to lungs, oxygenated blood from lungs enters heart through
pulmonary veins, enters left atrium, through bicuspid valve, to left ventricle,
through aortic valve, to aorta, to body
,coronary circulation correct answer circulation of blood in blood vessels of the
heart
Difference between pulmonary veins and arteries compared to other veins and
arteries correct answer pulmonary veins: carry oxygen from lungs to heart
pulmonary arteries: carry deoxygenated blood away from heart to the lungs
usually arteries are oxygenated and veins are deoxygenated (flipped)
How do capillaries exchange things correct answer slowest blood flow, takes time
for nutrients and waste to exchange
How do chemicals damage the lungs especially smoking correct answer effect on
cilia in the bronchioles, stimulates mucus production, kills phagocytes
How do you prevent hemolytic disease correct answer Anti-D immunoglobin
injection
How does the CV system maintain homeostasis correct answer (Blood) transport
of gases, nutrients, hormones, waste products, ions, etc.; clot formation; and
temperature regulation
How does the structure of red blood cells relate to their function correct answer
circle-normal
banana shape-sickle cell
, How is oxygen and carbon dioxide carried in blood and know roughly the quantity
(greatest, least, etc) correct answer carried by erythrocytes
low-oxygen
high-carbon dioxide
how is the heartbeat regulated correct answer medulla: regulates resting blood
pressure
baroreceptor reflex: keeps blood pressure within normal limits in the face of
sudden changes
How many oxygen are carried by each hemoglobin molecule and why correct
answer depends on pH level of tissues
how much O2 there is compared to CO2
temperature of tissues
intercalated discs correct answer support synchronized contraction of cardiac
tissue
Know the progression of the bronchial tree and the anatomical changes to the
epithelial cells and amount of smooth muscle correct answer trachea splits into 2
tubes called primary bronchi, then that divides into secondary bronchi(in lungs;
right bronchus divides into 3, left into 2), branching keeps getting smaller as tubes
extend farther from primary bronchus
Smooth muscle increases as it gets further down
