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PSYC 305 Study Guide - Stroke Volume, Abdominal Cavity, Glycosylation


Department
Psychology
Course Code
PSYC 305
Professor
Heungsun Hwang

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McGill University
Physiology 210 Mammalian physiology II
Midterm Examination Version 1
Thursday February 28th, 2013
Type A Questions: Choose the answer that is the best and darken the appropriate circle
1. Which of the following is NOT a step in hormonal signaling?
a) Synthesis of the hormone by endocrine cells (or neurons in case of neurohormones)
b) Transport of the hormone or neurohormone to target site by the blood stream
c) Detection of the hormone or neurohormone by a specific receptor protein on the
target cells
d) A change in cellular metabolism triggered by the hormone-receptor interaction
e) None of the above
2. Thyroid hormone
a) Induces PTH release via paracrine signaling with the parathyroids
b) Is an iodinated metabolite of the amino acid tyrosine
c) Stunts growth in a hyperthyroid state
d) Functions primarily through a G protein-coupled membrane receptor
e) None of the above
3. Cushing’s disease
a) Arises entirely from loss of glucocorticoid secretion
b) Is characterized by low circulating Na+ concentrations and low blood volume
c) Is characterized by low blood glucose during fasting
d) Is almost always primary in nature because it arises from adrenal atrophy
e) None of the above
4. FXR:
a) Is highly expressed in adipose tissue
b) Stimulates differentiation of adipose tissue leading to weight gain
c) Is a target of TZD drugs used in treatment of type II diabetes
d) Acts to suppress CYP7A expression as part of a negative feedback loop in bile acid
metabolism
e) All of the above

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McGill University
Physiology 210 Mammalian physiology II
Midterm Examination Version 1
Thursday February 28th, 2013
Type A Questions: Choose the answer that is the best and darken the appropriate circle
5. Which of the following statements is true about atrial fibrillation?
a) The start-up of the arrhythmia is due to premature ventricular contraction
b) There is the re-entrant motion of multiple action potentials wavefronts in the atrial
muscle
c) The cardiac output is very much reduced from normal
d) There is no evidence of atrial activity visible on the electrocardiogram
e) The start-up of the arrhythmia is due to a premature atrial contraction that
originates in an ectopic focus situated in the pulmonary arteries
6. In a patient with a stenosis of the aortic valve, one might expect to hear a murmur
a) Just before the first heart-sound
b) Between the first and second heart-sounds
c) Just after the second heart sound
d) During atrial systole
e) Just before the P-wave is seen on the ECG
7. Which statement is true about measuring the arterial blood pressure (BP)?
a) One is at the systolic BP when one first starts to hear the heart-sounds
b) In the oscillometric method, the oscillations in the pressure in the cuff cease before
the cuff pressure falls to the diastolic BP
c) The direct method of measuring BP is no longer used
d) One can calculate the pulse pressure by adding together the diastolic BP and the
systolic BP
e) One is at the diastolic BP when one ceases to hear the Korotkoff sounds
8. Increased activity in the sympathetic system will cause
a) A decreased heart rate
b) A decrease in the contractility of ventricular muscle
c) An increase in the amount of acetylcholine released at the synapse of the
sympathetic pre-ganglionic axon with the ganglion cell
d) An increase in the amount of acetylcholine binding to muscarinic receptors in
sympathetic ganglion cells
e) An increase in the amount of acetylcholine binding to muscarinic receptors on
sinus node cells

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

McGill University
Physiology 210 Mammalian physiology II
Midterm Examination Version 1
Thursday February 28th, 2013
Type A Questions: Choose the answer that is the best and darken the appropriate circle
9. With a fall in blood pressure, the reflex changes that will be provoked include:
a) Activation of the parasympathetic nervous system by the baroreceptor reflex
b) A decreased level of plasma epinephrine concentration
c) A decreased production of urine
d) A decreased plasma angiotensin I concentration
e) A decreased plasma aldosterone concentration
10. During heavy aerobic exercise in an individual of average weight, the cardiac output rises
to 25 L, the O2 content of the arterial blood stays at its resting value and the O2 of mixed
venous blood falls to 5mL per 100mL blood. During this exercise period, the consumption of
oxygen by the body, with respect to the resting value, will be multiplied by a factor of:
a) 10
b) 15
c) 20
d) 25
e) 30
11. Physiological distension at the level of the
a) distal portion of the esophagus, will generate primary esophageal peristaltic waves
b) proximal stomach, will generate strong local peristaltic waves
c) distal stomach, will generate local receptive relaxation
d) duodenum, will inhibit gastric antral peristaltic activity
e) distal ileum, will tighten the sphincter separating the small intestine from the colon
12. Which one of the following statements regarding the CTZ is INCORRECT?
a) It is located in the medulla oblongata
b) It lies outside the blood/brain barrier
c) Its intactness is NOT required for psychogenic vomiting to take place
d) Its intactness is NOT required for vomiting in response to chemical irritation of the
gastrointestinal tract
e) It continues to bring about vomiting in response to toxins in the blood stream, even
if the Vomiting Centre has been destroyed
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