Biology - Human Physiology
Exam Duration: 45 Mins Total Questions : 30
When the body is engaged in long-duration low-intensity exercise,the principal energy source is
- (a)
carbohydrates
- (b)
fats
- (c)
proteins
- (d)
glycogen
In man, heart beat is initiated by
- (a)
SA-node
- (b)
Purkinje fibres
- (c)
AV-noradrenaline
- (d)
Bundle of His
Alveoil increase the surface area by
- (a)
10 m2
- (b)
100 m2
- (c)
150 m2
- (d)
200 m2
The functional units for absorption of digested food are
- (a)
crypts of Lieberkuhn
- (b)
Peyer's patches
- (c)
villi
- (d)
Brunner's glands
The kidney are located
- (a)
within the peritoneal cavity
- (b)
near the buccal cavity
- (c)
near the heart
- (d)
outside the peritoneal cavity
Diameter of the renal afferent vessel is
- (a)
same as that of efferent
- (b)
smaller than that of efferent
- (c)
larger than that of efferent
- (d)
there is no efferent vessel
Which one are absorbed in the alimentary canal without any breakdown?
- (a)
Protein
- (b)
Polysaccharides
- (c)
Fat soluble vitamins
- (d)
Albumen of egg
If we remove the pressure receptors from the urinary bladder wall then
- (a)
there will be no micturition
- (b)
micturition will continue
- (c)
there will be no collection of urine in bladder
- (d)
urine will collect in the bladder
What is the location of troponin the process of muscle contraction?
- (a)
Attached to myosin filament
- (b)
Attached to tropomyosin
- (c)
Attached to myosin cross bridge
- (d)
Attached to T-tubule
Which one of the following pairs is the matching pair of the part and the hormone it secretes?
- (a)
Thyroid - Epinephrine
- (b)
Alpha cells of pancreas - Glucagon
- (c)
Anterior pituitary - Adrenaline
- (d)
Stomach epithelium - Secretin
Which is not a gonadal hormone?
- (a)
Progesterone
- (b)
Testosterone
- (c)
Adrenaline
- (d)
Oestrogen
Parasympathetic fibres arise from which set of cranial nerves?
- (a)
III, V, IX and X
- (b)
IV, V, IX and X
- (c)
III, VII, IX and X
- (d)
V, IX, X and XII
The fourth cranial nerve is
- (a)
oculomotor
- (b)
trochlear
- (c)
olfactory
- (d)
facial
Reabsorption of Na+ and water from the distal convoluted tubule is facilitated by
- (a)
ADH
- (b)
aldosterone
- (c)
insulin
- (d)
thyroxin
The part of nephron involved in active reabsorption of sodium is
- (a)
Distal convoluted tubule
- (b)
Proximal convoluted tubule
- (c)
Bowman's capsule
- (d)
Descending limp of Henle's loop
The inner protective covering lying close to the brain is called
- (a)
dura mater
- (b)
arachnoid membrane
- (c)
pia mater
- (d)
myelin sheath
Which of the following components is a part of the pectoral girdle?
- (a)
Sternum
- (b)
Acetabulum
- (c)
Glenoid cavity
- (d)
Ilium
Assertion: Nephrons are of two types: cortical and juxtamedullary according to their relative position in the cortex.
Reason: Juxtamedullary nephrons have short loop of Henle while cortical nephrons have long loop of Henle.
- (a)
If both assertion and reason are true and reason is the correct explanation of assertion.
- (b)
If both assertion and reason are true but reason is not the correct explanation of assertion
- (c)
If assertion is true but reason is false.
- (d)
If both assertion and reason are false.
Which of the following structures is found in diencephalon?
- (a)
Pons
- (b)
Basal ganglia
- (c)
Corpora quadrigemina
- (d)
Hypothalamus
Intervertebral disc is found in the vertebral column of
- (a)
birds
- (b)
reptiles
- (c)
mammals
- (d)
amphibians.
Which of the following cells are associated with identification of colours in bright light?
- (a)
Cone cells
- (b)
Rod cells
- (c)
Lacrimal cells
- (d)
Cells of Muller
The light stricking the retina generates nerve impulse. Which of the following options correctly describes the path of light?
- (a)
Photosensory cells \(\rightarrow\) Bipolar neurons \(\rightarrow\) Ganglionic cells \(\rightarrow\) Sensory nerves
- (b)
Sensory nerves \(\rightarrow\) Bipolar neurons \(\rightarrow\) Ganglionic cells \(\rightarrow\) Photosensory cells
- (c)
Sensory nerves \(\rightarrow\) Ganglionic cells \(\rightarrow\) Bipolar neurons \(\rightarrow\) Photosensory cells
- (d)
Photosensory cells \(\rightarrow\) Ganglionic cells \(\rightarrow\) Bipolar neurons \(\rightarrow\) Sensory nerves
CO2 dissociates from carbamino haemoglobin when
- (a)
PCO2 is high and PO2 is low
- (b)
PO2 is high and PCO2 is low
- (c)
PCO2 and PO2 are equal
- (d)
none of the above.
Sheet or broad band of fibrous connective tissue that is deep is deep to the skin an surrounds entire muscles and other organs of body are
- (a)
Epimysium
- (b)
Fasicule
- (c)
Endosperm
- (d)
Fa scia
Odontoid process is present with which vertebrae of vertebral column?
- (a)
Atlas vertebrae
- (b)
Axis vertebrae
- (c)
vertebrae prominens
- (d)
Lumbar vertebrae
Blood which leaves liver and passes towards heart has higher concentration of
- (a)
Bile
- (b)
Oxygen
- (c)
RBCs
- (d)
Urea
Concentration of urine depends upon which of the following?
- (a)
Bowman's capsule
- (b)
Length of Henle's loop
- (c)
P.C.T
- (d)
Network of capilaries arising from glomerulus
Which of the following is an action not produced by sympathetico-adrenal sysytem?
- (a)
Constriction of skin and visceral smooth muscle
- (b)
Dilation of arterioles of heart and skeletal muscels
- (c)
Constriction of pupils
- (d)
Dilation of bronchioles
Which of the following is known as natural pacemaker of the heart?
- (a)
Sinu atrial node
- (b)
Atrio ventricular node
- (c)
Bundle of His
- (d)
Purkinje fibres
Absorption of water, simple sugars and alcohol etc. takes place in
- (a)
Mouth
- (b)
Stomach
- (c)
Rectum
- (d)
Large intestine