Question # 1

Sharp rise in LH output due to estrogens is an example of

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Negative feedback

Positive feedback

Primary feedback

None

Deficiency of sex hormones in adults results in

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Sexual immaturity

Mortality

UTI

sterility

Non-neural cells which encapsule the axon of neurons are

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Microglial

Microbodies

Schwann cells

Companion cells

Resting membrane potential of a neuron is

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50mV

-70mv

-80mV

90mV

High calcium concentration in blood causes the stimulation of

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Parathormone

Calcitonin

T₃

T₄

Which is incorrect about resting membrane potential

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Na+ ions are ten folds higher outside

2 Na+ move out for 3 K+ move in

K+ ions are twenty folds higher inside

Some k+ ions leak out

Depolarization of neural membrane is due to

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Influx of K+

Efflux of Na+

Influx of Na+

None

Which is correct about myelin sheath

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It speeds up conduction

It is found in all axons

It is found in all dendrites

It is proteinaceous only

Which is responsible for hyperpolarization across membrane

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Disturbing of charge

Late closing of K+ gates

Influx of Na+

Efflux of Na+

The simplest reflex circuit includes___ elements

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1

2

3

4

Which of the following hormone affects the supply of testosterone

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LH

GH

FSH

Aldosterone

Primary sensory areas are present in

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Cerebral cortex

Cerebral medulla

Cerebellum

Medulla oblamgata

Which is incorrect statement about spinal cord

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White matter contains myelinated axons

Grey matter contains non myelinated axons

Grey matter contains cell bodies of sensory neurons

Location of Peripheral nerve is near to spinal cord

A hormone which regulates glucose and minerals

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Aldosterone

Cortisol

Insulin

Corticosterone

Which is not the function of glucagon

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Glycogen hydrolysis

Lipolysis

Gluconeogenesis

Protein synthesis

Myelin is made up of

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Nucleoprotein

Lipoprotein

Glycolipids

Glycoproteins

This is not the part of neuron

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Axon

Dendron

Nissl’ granules

Synapse

It brings about an increase in blood glucose level mainly by its production from glycogen

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Insulin

Glucagon

Cortisol

Aldosterone

Which of the following is correct about insulin

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Inhibit glycogen hydrolysis

Increase protein synthesis

Increase glycolysis

All

Melanin pigment is produced under the hormone

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ADH

MSH

STH

TSH

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