Question

This statement is not associated with the midbrain:
A. ventral portion of the midbrain composed of mainly four-round swellings known as corpora quadrigemina
B. located between the thalamus of the forebrain and the pons of the hindbrain
C. canal called cerebral aqueduct passes through the midbrain
D. hindbrain and midbrain constitute the brain stem

Answer 1

Hint:
The central neural system includes the brain and the spinal cord. The central information-processing organ of our body; the brain acts as the command and control system. There are three major parts of the brain the forebrain, the midbrain and the hindbrain which are responsible for different activities.

Complete step by step answer:
The cerebrum, thalamus and hypothalamus are the three parts of the forebrain.
The midbrain is situated between the thalamus (hypothalamus) which is part of the forebrain and the pons region of the hindbrain. The cerebral aqueduct is a canal that passes through the midbrain and allows the flow of cerebrospinal fluid (CSF) between the third ventricle and the fourth ventricle. The hindbrain (pons and medulla oblongata) and midbrain form the brain stem. It sends messages to the rest of the body to regulate balance, breathing and heartbeat rate. It regulates many involuntary functions such as breathing, heart rate, swallowing etc. Four round swellings (lobes) called corpora quadrigemina are present at the dorsal portion of the midbrain. It is the reflex centre that connects the midbrain and hindbrain and is concerned with the sense of audio and vision.
The pons, cerebellum and medulla oblongata from the hindbrain.
Thus, the correct answer is:- ventral portion of the midbrain composed of mainly four-round swellings known as corpora quadrigemina.

Option ‘A’ is correct

Note:
The midbrain connects the forebrain and hindbrain and transmits the signals from the hindbrain to the forebrain. It controls vision, hearing, temperature regulation and alertness etc.