WorksheetsHuman Physiology (C)
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
The maximum amount of electrolytes and water (70 - 80 per cent) from the glomerular filtrate is reabsorbed in which part of the nephron?
a)
Ascending limb of loop of Henle
b)
Distal convoluted tubule
c)
Proximal convoluted tubule
d)
Descending limb of loop of Henle
2.
Which of the following statements is correct with respect to kidney function regulation?
a)
When someone drinks lot of water, ADH release is suppressed.
b)
Exposure to cold temperature stimulates ADH release.
c)
An increase in glomerular blood flow stimulates formation of angiotensin II.
d)
During summer, when body loses lot of water by evaporation, the release of ADH is suppressed.
3.
Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?
a)
Increase in aldosterone levels
b)
Increase in antidiuretic hormone levels
c)
Decrease in aldosterone levels
d)
Decrease in antidiuretic hormone levels
4.
What will happen if the stretch receptors of the urinary bladder wall are totally removed?
a)
There will be no micturition
b)
Urine will not collect in the bladder.
c)
Micturition will continue.
d)
Urine will continue to collect normally in the bladder.
5.
Which of the following is not a part of a renal pyramid?
a)
Peritubular capillaries
b)
Convoluted tubules
c)
Collecting ducts
d)
Loop of Henle
6.
Which one of the following statements is incorrect?
a)
The principle of counter current flow facilitates efficient respiration in gills of fishes.
b)
The residual air in lungs slightly decreases the efficiency of respiration in mammals.
c)
The presence of non-respiratory air sacs increases the efficiency of respiration in birds.
d)
In insects, circulating body fluids distribute oxygen to tissues.
7.
People living at sea level have around 5 million RBCs per cubic millimeter of their blood; whereas those living at an altitude to 5,400 metres have around 8 million RBCs per cubic millimeter of their blood. This is because at high altitude
a)
people eat more nutritive food, therefore, more RBCs are formed
b)
people get pollution-free air to breathe and more oxygen is available
c)
atmospheric O2 level is less; and hence, more RBCs are needed to absorb the required amount of O2 to survive
d)
there is more UV radiation, which enhances RBC production
8.
A drop of each of the following is placed separately on four slides. Which one of them will not coagulate?
a)
Blood serum
b)
Sample from the thoracic duct of lymphatic system
c)
Whole blood from pulmonary vein
d)
Blood plasma
9.
Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?
a)
Eosinophils
b)
Monocytes
c)
Neutrophils
d)
Basophills
10.
How do parasympathetic neural signals affect the working of the heart?
a)
They reduce both heart rate and cardiac output.
b)
Heart rate is increased without affecting the cardiac output.
c)
Both heart rate and cardiac output increase.
d)
Heart rate decreases but cardiac output increases.
11.
What is the vital capacity of our lungs?
a)
Inspiratory reserve volume + expiratory reserve volume
b)
) Total lung capacity – residual volume
c)
Inspiratory reserve volume + tidal volume
d)
Total lung capacity – expiratory reserve volume
12.
A person sitting at rest experiences a temporary cessation of breathing after forced deep breathing for a few minutes. This is due to
a)
too much CO2 in the blood
b)
too much O2 in the blood
c)
very little CO2 in the blood
d)
both high O2 and very little CO2 in the blood
13.
Read the following statements and select the correct one.
a)
Oxyhaemoglobin of erythrocytes is alkaline.
b)
more than 70% of CO2 is transferred from tissues to lungs in the form of carbamino compounds.
c)
The H+ released from carbonic acid combines with Hb to form haemoglobinic acid.
d)
In lungs, the O2 from the alveolus reaches the blood through active transport.
14.
Which one of the following is the correct description of a certain part of a normal human skeleton?
a)
Parietal bone and the temporal bone of the skull are joined by fibrous joint.
b)
First vertebra is axis which articulates with the occipital condyles.
c)
The 9th and 10th pairs of ribs are called the floating ribs.
d)
Glenoid cavity is a depression to which the thigh bone articulates.
15.
Which one of the following options is incorrect?
a)
Hinge joint – Between humerus and pectoral girdle
b)
Pivot joint – Between atlas, axis and occipital condyle
c)
Gliding joint – Between the carpals
d)
Saddle joint – Between carpals and metacarpals of thumb
16.
Sliding filament theory can be best explained as
a)
when myofilaments slide pass each other actin filaments shorten while myosin filament do not shorten
b)
actin and myosin filaments shorten and slide pass each other
c)
actin and myosin filaments do not shorten but rather slide pass each other
d)
when myofilaments slide pass each other, myosin filaments shorten while actin filaments do not shorten
17.
Which of the following regions of the brain is incorrectly paired with its function?
a)
Medulla oblongata - homeostatic control
b)
Cerebellum - language comprehension
c)
Corpus callosum - communication between the left and right cerebral cortices
d)
Cerebrum - calculation and contemplation
18.
After Audrey drinks a glass of juice, digestive processes deliver glucose to the bloodstream.
From the bloodstream, glucose molecules enter the cell. In order for glucose molecules to be used by the cell, glucose-specific enzymes must do what?
From the bloodstream, glucose molecules enter the cell. In order for glucose molecules to be used by the cell, glucose-specific enzymes must do what?
a)
A) bind glucose molecules to each other
b)
B) evaluate the energy content of the glucose
c)
C) catalyze a chemical reaction with the glucose (or break down into smaller molecules).
d)
D) transport the glucose molecules to the nucleus)
19.
Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
a)
nerve fibre is insulated by a medullary sheath
b)
sodium pump starts operating only at the cyton and then continues into nerve fibre
c)
neurotransmitters are released by dendrites and and not by axon endings
d)
neurotransmitters are released by the axon endings and not by dendrites
20.
When a neuron is in resting state i.e., not conducting any impulse, the axonal membrane is
a)
comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
b)
comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
c)
equally permeable to both Na+ and K+ ions
d)
impermeable to both Na+ and K+ ions
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