A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Which of the following is the most sensitive test of pancreatic B-cell insulin secretory reserve?
A. Oral glucose tolerance test
B. Fasting plasma glucose
C. Urine glucose excretion
D. Random blood glucose
2. Which of the following has an inhibitory influence on erythropoiesis?
A. Cortisol
B. Growth hormone
C. Estradiol
D. Thyroxine
3. Which of the following is a bile acid synthesized by the hepatocyte?
A. Sodium taurocholate
B. Chenodeoxycholic acid
C. Deoxycholic acid
D. Lithocholic acid
4. The skeletal muscle complex known as the triad consists of
A. Actin, myosin, and filaments.
B. A transverse tubule and terminal cisternae.
C. Filaments, myofibrils, and sarcomeres.
D. A bands, H bands, and I bands.
5. Denervation hypersensitivity:
A. is due to upregulation of neurotransmitter receptors in the denervated structure
B. does not occur in smooth muscle
C. partly explains the release phenomenon that occurs in neurological diseases
D. All these
6. Check all correct statements regarding oxytocin.
A. It is essential for milk ejection
B. It increases uterine contractility
C. It facilitates ejaculation of semen
D. All these
7. Insulin dependent glucose uptake into skeletal muscle and adipose tissue is mainly mediated by:
A. GLUT 1
B. GLUT 2
C. GLUT 3
D. GLUT 4
8. Hot water bottle relieves pain of abdominal spasm by:
A. Stimulation of adrenergic fibers
B. Stimulation of cholinergic fibers
C. Inhibition of cold receptors
D. Inhibition of heat receptors
9. Type IIB skeletal muscle fibers:
A. are called fast glycolytic fibers.
B. have little to no myoglobin.
C. are innervated by fast motor units that are fatigable.
D. All these
10. Feedforward inhibition has been well described in neural circuits in the:
A. spinal cord
B. cerebellum
C. stretch reflexes
D. nociceptive pathway
11. Urinary metabolite of progesterone:
A. Pregnanolone
B. Progestriol
C. Hydroxypregnanolone
D. Pregnanediol
12. The bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a(n)
A. Fascicle.
B. Tendon.
C. Ligament.
D. Epimysium.
13. The cell membrane of skeletal muscle is called the
A. Sarcolemma.
B. Sarcomere.
C. Sarcosome.
D. Sarcoplasmic reticulum.
14. 100 mg of sucrose is injected intravenously into an adult male weighing 70 kg. The plasma concentration of sucrose after mixing is 0.01 mg/ml. If 5 mg of sucrose has been metabolized during this period, the ECF volume in this individual is approximately:
A. 6 liters
B. 9.5 liters
C. 14 liters
D. 17.5 liters
15. Which of the following is an example of primary active transport?
A. Ca extrusion from cells by the Na-Ca exchanger
B. Glucose entry into cells through glucose transporter 2 (GLUT-2)
C. H2O flux across cell membranes through aquaporins
D. Ca sequestration in sarcoplasmic reticulum by Ca-ATPase
16. Which of the following causes luteolysis?
A. PGF2 alpha
B. Progesterone
C. Inhibin B
D. Relaxin
17. The doll's eye reflex is integrated in the
A. cerebral cortex
B. medial longitudinal fasciculus
C. thalamus
D. medulla
18. Muscle contraction in response to maintained stretch is initiated by sensory inputs from:
A. nuclear bag fibers
B. nuclear chain fibers
C. Golgi tendon organ
D. ?-motor neurons
19. The Papez circuit consists of:
A. hypothalamus
B. anterior thalamus
C. cingulate cortex
D. All these
20. Ryanodine receptor is located in the:
A. sarcolemma
B. T-tubule
C. terminal cisterns of sarcoplasmic reticulum
D. cytosol
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