FREE NEET Biology Practice MCQ Test: Neural Control And Coordination Exercise 3 Questions Answers With Detailed Explanations [PDF]

Answer: (b)

Answer: (b)

Abducens nerve is the sixth cranial nerve. It supplies the extraocular muscle (superior oblique) of eyeball and, therefore controls movement of the eyeball.

Answer: (c)

The limbic lobe or limbic system, along with the hypothalamus, is involved in the regulation of emotions and motivation.

Answer: (a)

Nerve impulse is carried through afferent nerve fibres from receptors to central nervous system.

Answer: (c)

Answer: (b)

Sodium, calcium and potassium ions are required for nerve conduction.

Answer: (d)

Language comprehension is a function of cerebrum. Cerebellum coordinates and controls rapid muscular activities such as running, typing etc. Although it does not initiate such voluntary movements, but it is an important centre for coordinating movements and for controlling posture and balance. Cerebellum's function is almost exclusively motor; but it is also implicated in some forms of learning.

Answer: (a)

Answer: (b)

Answer: (b)

Arbor vitae is composed of white matter.

Answer: (d)

Answer: (d)

Answer: (b)

Answer: (a)

Hind brain consists of cerebellum located dorsally medulla oblongata and ponsvarolii. It contains centres for maintenance of posture and equilibrium of the body and for the muscle tone. All activities of the cerebellum are involuntary but may involve learning in their early stages.

Answer: (b)

Answer: (c)

An action potential is a localized electrical event—a membrane depolarization at a specific point of stimulation.

Answer: (a)

Axon is a long fibre which transmits impulses away from the cell body.

Answer: (b)

Answer: (d)

Cornea is a transparent portion that forms the anterior one-sixth of the eye ball. The cornea admits and helps to focus light waves as they enter the eye. The cornea is avascular (i.e., has no blood supply). This part of eye absorbs oxygen from the air. The cornea was one of the first organs to be successfully transplanted because it lacks blood vessels.

Answer: (c)

Trigeminal nerve is the largest $5^{th}$ cranial nerve. It has 3 branches : Ophthalamic, Maxillary and Mandibular.