Exam 11 Flashcards
The hydrostatic blood pressure is ___ directly related to the blood pressure. The hydrostatic blood pressure is ___ inversely related to the surface area
A. Always, not always
B. Not always, not always
C. Always, always
D. Not always, always
D. Not always, always
Which is a correct statement about the calcium sources of the three main muscle types?
A. In only cardiac muscle, calcium can enter the cytosol via two differently gated channel types
B. In only smooth, the intracellular level of calcium rise
C. Like skeletal, cardiac muscle’s sarcoplasmic reticulum has voltage gated channels
D. Skeletal muscle, like the other two, has voltage gated channels in its plasma membrane
A. In only cardiac muscle, calcium can enter the cytosol via two differently gated channel types
Which is a correct statement about blood vessels?
A. Arteries carry oxygenated blood away from the heart
B. The type most likely to rupture are the capillaries
C. Both arteries and veins have one way valves within them
D. The capillaries have a lower blood pressure than the veins
B. The type most likely to rupture are the capillaries
Which is a correct statement about the arterial blood pressure?
A. More rigid walls cause less variation in this pressure
B. An increase in endothelin-1 will increase this pressure
C. Its systolic measurement is greater than its diastolic one
D. As it increases, baroreceptor action potential amplitude will increase
C. Its systolic measurement is greater than its diastolic one
(Not B bc that is arteriolar)
Willie the Wildcat was shrunk by Brutus to the size of a protein. As Willie moves through a heart, he correctly observes which aspect of heat’s contraction pattern?
A. It is initiated by the afferent nervous system
B. The electrical activity can move from an atrial cell via gap junctions
C. The bundles of His carry the electrical activity to the bottom of the atria
D. Electrical activity is continually moving from one myocardial cell to the next one
B. The electrical activity can move from an atrial cell via gap junctions
The sympathetic nervous system will increase the ___ and decrease the ___
A. Stroke volume, end diastolic volume
B. Cardiac output, arterial pressure
C. Heart rate, conduction velocity
D. End systolic volume, stroke volume
B. Cardiac output, arterial pressure
Cardiac output will increase when…
A. Tight junctions are increased between myocardial cells
B. The end diastolic volume is decreased
C. The sympathetic nervous system is activated
D. An increase action potential amplitude is received by the sinoatrial node
C. The sympathetic nervous system is activated
Sydney did a complex workout focused exclusively on her leg muscles. To distract herself from her soreness, she determined how active hyperemia changed her blood flow during that workout. She correctly stated that she had vasodilation of the ___ supplying her leg muscles and ___ blood flow to her arm muscles
A. Arterioles, unchanged
B. Arteries, unchanged
C. Arterioles, decreased
D. Arteries, decreased
C. Arterioles, decreased
Brutus experiences a brief disruption that prevents action potentials from being received by his brainstem. During this temporary disruption, Brutus’ blood pressure is expected to ___ because ___
A. Fall, ADH levels increase
B. Rise, endothelin-1 levels increase
C. Fall, parasympathetic input is decreased
D. Rise, sympathetic input is increased
D. Rise, sympathetic input is increased
When Scott woke up this morning, her dream about being a physician was fresh in her mind. When listening to her patient’s heart, she heard lub-dub-shh and correctly realized that this patient…
A. Was experiencing backflow into the atria
B. Had an improperly closing semilunar valve
C. Both statements are correct
D. Neither statement is correct
B. Had an improperly closing semilunar valve
In the Party Room, Libby was correctly explaining the methods to regulate blood flow to specific tissues. A correct statement made was that…
A. Paracrines can be utilized to impact the arterial blood pressure
B. Endothelial cells sometimes release epinephrine to cause vasoconstriction
C. Both statements are correct
D. Neither statement is correct
D. Neither statement is correct
(it’s arteriolar, endos send ET1 for VC, Epi is VD for skeletal and VC for other places)
While in microscopic anatomy lab, Carmen viewed a myocardial fiber with a microscope. Which could have been viewed?
A. Cadherins holding this fiber to another one
B. Only electrical synapses
C. Both statements are correct
D. Neither statement is correct
C. Both statements are correct.
Dr Scarlet’s Patient X is experiencing weak and occasionally absent ventricular contractions. Consequently, Dr. S expects to view…
A. An EKG for Patient X having atypical QRS complexes
B. Patient X’s blood results showing increasing levels of vasopressin
C. Both statements are correct
D. Neither statement is correct
C. Both statements are correct.
Dr Gray’s Patient Y presents with a slightly higher end diastolic volume than typical for their measurements that last five years. Consequently, Dr G correctly expects that their ___ than their five year trend
A. Strole volume will be lower
B. Heart rate will not need to be different
C. Both statements are correct
D. Neither statement is correct
B. Heart rate will not need to be different
The left ventricle is larger than the ___ because it ___
A. Right atria, moves oxygenated blood
B. Left atria, needs to move blood further
C. Both statements are correct
D. Neither statement is correct
B. Left atria, needs to move blood further
