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MSU PSL Quiz Bowl 2.1 Flashcards | StudBud
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MSU PSL Quiz Bowl 2.1
MSU PSL Quiz Bowl 2.1
30 terms
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Questions
30
Answers
1
Which factor is MOST responsible for the velocity of blood flow being lowest in the capillaries?
Pulsatile forward flow
Afterload
Total cross-sectional area
Relative resistance
2
In a patient who has become dehydrated, body water should be replaced by intravenous infusion of:
5% glucose solution
0.9% sodium chloride solution
distilled water
10% glucose solution
3
In adults, hematopoietic stem cells (HSCs) originate where?
Endothelial cells
Yellow marrow
Thymus
Red marrow
4
In a fetus, hematopoietic stem cells (HSCs) can also originate where? (Select all that apply)
Spleen
Yellow marrow
Thymus
Liver
5
Renin is secreted by:
cells in the macula densa.
granular cells in the juxtaglomerular apparatus.
cells in the peritubular capillary bed.
cells in the proximal tubules.
6
The second heart sound is caused by:
closure of the aortic and pulmonary valves.
ventricular filling.
closure of the mitral and tricuspid valves.
retrograde flow in the vena cava.
7
Opening which ion channel contributes to the repolarization of ventricular muscle fibers?
Cl-
Ca2+
Na+
K+
8
Which type of autonomic nerve has the highest conduction velocity?
myelinated pre-ganglionic fibers
unmyelinated pre-ganglionic fibers
myelinated post-ganglionic fibers
unmyelinated post-ganglionic fibers
9
Sensory nerve fibers from the anterior two-thirds of the tongue travel in the:
Olfactory nerve (I)
Glossopharyngeal nerve (IX)
Facial nerve (VII)
Vagus nerve (X)
10
Which type of cell acts as a deep pressure/fast vibration receptor?
Merkel cells
Ruffini corpuscles
Meissner corpuscles
Pacinian corpuscle
11
Erythropoietin is secreted by:
cells in the peritubular capillary bed.
cells in the macula densa.
cells in the proximal tubules.
cells in the distal tubules.
12
The velocity of blood flow...
is higher in the veins than the venules.
is higher in the capillaries than the arterioles.
is lowest in the capillaries.
is higher in the veins than the arteries.
13
The fourth heart sound is caused by:
there isn't a fourth heart sound.
closure of the mitral and tricuspid valves.
ventricular filling, typically only with diseased valves.
retrograde flow in the vena cava.
14
Given enough vasopressin for maximal antidiuresis, the greatest fraction of filtered water is absorbed in the:
Medullary collecting duct
Loop of Henle
Proximal tubule
Cortical collecting duct
15
Which type of cells acts as a sustained pressure receptor?
Meissner corpuscles
Ruffini corpuscles
Merkel cells
Pacinian corpuscle
16
Which ion is the primary determinant of nerve/skeletal muscle fiber resting membrane potential?
Cl-
Ca2+
Na+
K+
17
The thick filament is composed of:
F-actin
Myosin
Tropomyosin
G-actin
18
Which ion is required to allow myosin-actin cross-bridging?
Ca2+
K+
Cl-
Na+
19
The term "corpuscle" is an older term for what?
Receptor
Nerve
Fiber
Cell
20
The dicrotic notch on the aortic pressure curve is caused by:
closure of the tricuspid valve.
closure of the mitral valve.
closure of the aortic valve.
rapid filling of the left ventricle.
21
In a regular GPCR, how many transmembrane units are there?
3
5
1
7
22
An image received from the left temporal field of view will be processed by:
Left occipital cortex
Right lateral geniculate body
Right occipital cortex
Left lateral geniculate body
23
The T-tubule is connected to the lumen of the sarcoplasmic reticulum by what two receptors?
Dihydropyridine receptor
Ryanodine receptor
G Protein-Coupled Receptor
ACh receptor
24
Dehydration increases the plasma concentration of all the following hormones EXCEPT:
vasopressin
aldosterone
atrial natriuretic peptide
angiotensin II
25
The thin filaments attaches to:
A band
I band
Z line
M line
26
Which type(s) of muscle have striations? (Select all that apply)
All of the above
Skeletal muscle
Cardiac muscle
Smooth muscle
27
Which of the following is NOT a method of neurotransmitter regulation in the synaptic cleft?
Electrolysis
Reuptake
Diffusion
Enzymatic degredation
28
How can the excitability of a neuron be progressively decreased?
Summation of IPSPs
Summation of SMGs
Summation of EPSPs
Summation of EMPs
29
Which part of the ECG corresponds to ventricular repolarization?
QRS complex
P wave
PR interval
T wave
30
Lactic acidosis is a result of hypovolemic shock or sepsis. What is the primary mechanism by which lactate is produced?
Aerobic glycolysis.
Anaerobic glycolysis.
Gluconeogenesis.
Ketogenesis.
