Homeostasis
Which of the following is a correct definition of “positive feedback”?
The process by which the body maintains homeostasis
A mechanism in which the body’s response to a stimulus opposes the stimulus
A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus
The dynamic equilibrium maintained by an integrating centre which causes an effector to respond to the stimulus received by the receptor
A mechanism whereby the body responds to a stimulus by acting to enhance the stimulus
When the stimulus is enhanced, the feedback is termed “positive”.
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B. functions of enzymes
C. process of diffusion
D. process of osmosis
Role in the maintenance of body temperature and removal of excess water and salts is performed by
A. lungs
B. kidney
C. skin
D. pancreas
The capillaries of the glomerulus arise from
A. efferent arteriole
B. afferent arteriole
C. renal artery
D. bowman’s capsule
The Al-Tasrif is the book based on surgical instruments written by
A. Abu al-Qasim al-Zahrawi
B. Ibn e Sina
C. Ibn ul Haithem
D. Abu Nasr al-Farabi
The reabsorption of salts during urine formation is allowed by
A. descending limp of loop of Henle
B. ascending limp of loop of Henle
C. Bowman’s capsule
D. glomerulus
In human kidneys, the single duct in which distal convoluted tubules opens is called
A. proximal duct
B. renal duct
C. papillary duct
D. collecting duct
The urine is carried to the urinary bladder from kidneys by the
A. gall bladder
B. urethras
C. ureters
D. sclerenchyma tissues
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