Question

Arbor vitae is composed of
(a) Gray matter
(b) White matter
(c) Neuroglial cells
(d) Antipodal cells

Answer 1

Hint: This is the tissue through which messages pass between different areas of grey matter within the central nervous system. It is white in appearance because of the fatty substance (myelin) that surrounds the nerve fibers (axons).

Complete Answer:
The cerebellum is the part of the hindbrain which helps to maintain the coordination between right and left part of the body. It has white and grey matter. The white matter consists of the myelinated sheath.
Arbor vitae is the white matter present in the cerebellum of the brain. It has a tree-shaped structure. It helps in the conduction of sensory and motor impulses to the cerebellum.
The functions of other parts of the brain are:
-The midbrain serves as the control center of motor movement, particularly movements of the eye, and in auditory and visual processing.
-The pons functions are to relay signals from the forebrain to the cerebellum, along with dealing with voluntary and involuntary movements such as sleep, respiration, swallowing, bladder control, hearing, equilibrium, taste, eye movement, facial expressions, facial sensation, and posture.
Hypothalamus is a highly important part of the brain as it connects the nervous system to the endocrine system through the pituitary gland.
Hypothalamus works in promoting or inhibiting various processes in the body.

So, the correct answer is,’ White matter.’

Notes:
The nervous system consists of two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that arise from the spinal cord and innervates all parts of the body. Each side of the brain comprises four lobes. The frontal lobe is significant in cognitive functions and control of voluntary movements of the body. The parietal lobe deals with the information about temperature, taste, touch, and movement, and the occipital lobe is principally responsible for the vision. The temporal lobe handles the functions related to memories, combining them with sensations of taste, sound, sight, and touch.