Question

The medulla oblongata of the brain passes out through
A. Foramen obturator
B. Foramen magnum
C. Foramen of Magendie
D. Foramen of Luschka

Answer 1

Hint: The medulla oblongata is a part of hindbrain.

Complete answer:The brain is enclosed inside the skull which is also known as the brain box or cranium.
The brain is divided into 3 parts forebrain, midbrain, and hindbrain.
1. The hindbrain is made of the cerebellum and medulla oblongata.
2. The medulla passes through the foramen magnum and becomes a part of the spinal cord.
3. The spinal cord is enclosed by the vertebral column.
4. The foramen magnum is a part of the occipital bone of the skull in all vertebrates.
5. The structure that passes through the anterior portion is ligaments such as the alar ligament which is attached on each side of the tubercle of the occipital condyle, apical ligament, cruciate ligament.
6. Structures that pass through the posterior compartment are meninges, vertebral artery, accessory nerves, tonsil of the cerebellum.
7. Opisthion is the midpoint in the anterior portion and basion on the posterior portion.
8. The foramen magnum is placed differently in humans and apes.
9. The medulla oblongata is a part of the brainstem and is a cone-shaped neuronal mass that takes part in the autonomic functions of the human body. It connects the brain to the spinal cord.

So, the correct answer is “Option B”.

Note: The central nervous system of vertebrates consists of the spinal cord and brain.