Neural control and coordination practice · Mixed difficulty

Select the correct arrangement of neural organization, according to the increasing degree of complexity

In our body which systems are involved in synchronized fashion to control the activities

The opening of ion-channels on post synaptic membrane generates -

Assertion: We can equalise pressure on either side of ear drum
Reason: Eustachian tube connects inner ear with pharynx

Assertion: The place in retina from which the optic nerve leaves is known as blind spot
Reason: Because this place is devoid of photoreceptor cells

Read the following statements regarding regulation of cardiac activity.

A. A special neural centre in medulla can moderate cardiac output through somatic neural system.

B. Neural signals through parasympathetic nervous system can decrease the rate of heartbeat.

C. Neural signals through sympathetic nervous system can increase the rate of heartbeat.

D. Adrenal medullary hormones can also decrease the cardiac output.

Choose the option that correctly states the above statements as true (T) or false (F).

Which pair of Structures distinguish a nerve cell from other cells?

Neurons are excitable cells". The statement is best illustrated as

Vitreous chamber, which is filled by vitreous humor is the space

For quick coordination, our neural system is organized through

What used to be described as Nissl’s granules in a nerve cell are now identified as?

Patients suffering from cholera are given a saline drip because

Which of the following statemetns are true regarding the hypothalamus?

Given below the hormones present in human body
I. Cortisone
II. Acetylcholine
III. Epinephrine
Choose the correct option regarding these hormones

The movement of the nerve impulse across synaptic cleft is primarily

Assertion: Change in potential from –70 mV to –0 80 mV is called Depolarisation

Reason: At –70 mV voltage gated Na+ channel open.

Assertion (A): Resting membrane potential is $-70\,mV$.

Reason (R): $Na^+$ - $K^+$ pump plays an important role in maintaining resting membrane potential.

Eustachian tube is a passage which connects the

The axons transmit nerve impulses from the cell body to a

Select the mismatched pair.

During repolarisation of nerve

Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that

Give the correct term for each of the following and choose the correct option from the codes given below
A. Axon or dendron, covered with one or two sheaths
B. Bundles of nerve fibres within the centralnervous system
C. Masses of neurons that lie in the peripheral nervous system
D. Masses of neurons clustered inside the central nervous system
Codes

Anterior choroid plexus is present on the

All of the following characteristics of electron and chemical synapses correctly differentiate these synapses except

Identify the correct option in the relevance of arrangement of cranial meninges from inside (which is in contact with the brain tissue) to outside (cranium):

Following are some nerves. Categorise them as afferent, efferent and mixed nerves according to their nature and than choose the correct option from the codes given below
I. Trigeminal nerves
II. Occulomotor nerves
III. Olfactory nerves
IV. Auditory cranial nerves
V. Hypoglossal cranial nerves
VI. Spinal accessory cranial nerves
VII. Optic nerves
VIII. Abducens nerves
IX. Pathetic nerves
X. Glossopharyngeal nerves
XI. Vagus cranial nerves
XII. Spinal nerves
XIII. Facial nerves
Codes
Afferent nerves Efferent nerves Mixed nerves

Adaptation’ of eyes in dark is due to

The specific region of hypothalamus, responsible for physiological sweat secretion is

When a neuron is not conducting any impulse i.e, resting, the axonal membrane comparatively ________ to potassium ions ($K^+$) and nearly ________ to sodium ($Na^+$) ions.