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Physiology of Respiration

Respiratory c...

Question

Respiratory centres of the brain are located in

A

Pons and medulla oblongata

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B

Olfactory lobe

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C

Occipital lobe

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D

Thalamus

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Solution

The correct option is A
Pons and medulla oblongata

A group of nerve cells in the pons and medulla of the brain control the rhythm of breathing in response to changes in levels of oxygen, carbon dioxide, and hydrogen ions in the blood and cerebrospinal fluid.

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Q. Match these parts with their functions:

(Medulla oblongata, cerebellum, forebrain, thalamus, cerebral cortex, hindbrain, pons, hypothalamus)
a) Sleep centre and respiratory centre.
b) Several reflexes involved in the regulation of heartbeat, blood vessel contraction, breathing, etc.
c) Consists of cerebrum, thalamus, and hypothalamus.
d) Motor and sensory areas.
e) A major conducting centre for sensory and motor signaling.
f) Regulation of sexual behavior.
g) Consists of the pons, cerebellum, and medulla oblongata.
h) Coordinates the group movements of voluntary muscles, as in walking or running.

Q. Read the following and find the correct statements.

(A) Midbrain, pons varoli and medulla oblongata are together called the brain stem
(B) Paracoels are connected to the diacoel through the iter
(C)The regulation centres of heartbeat, respiration, swallowing, cough, etc. are located in the medulla oblongata
(D) Cerebellum is also called the gyroscope of the body

Q. Give the function of the following structures:
(i) Ear pinna
(ii) External auditory meatus
(iii) Cochlea
(iv) Semicircular canals
(v) Lachrymal gland
(vi) Eyelids
(vii) Retina
(viii) Eye lens
(ix) Pupil
(x) Olfactory lobe
(xi) Optic lobe
(xii) Medulla oblongata

Q. In mammals the corpus callosum connects
(a) the two optic lobes
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Q. Cerebellum, medulla oblongata and pons are the part of

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