Question

All the involuntary actions including blood pressure salivation and vomiting are controlled by _______ in the Hind brain.
1. Thalamus
2. Cerebrum
3. Medulla
4. Cerebellum

Answer 1

Correct Answer - Option 3 : Medulla

The correct answer is Medulla.

Explanation:

• Medulla is the part of the brain (Hindbrain).
• Brain is the central information processing organ of our body and acts as the 'command and control sysem' of all body activities.
• It is the lowest part of the brain as well as the lowest portion of the brainstem.
• Medulla (oblongata) of the brain is connected to the spinal cord.
• The medulla contains centres, which control respiratory rhythm, cardiovascular reflexes, gastric secretions, and the postural gestures of the body.
• Therefore, It controls all the involuntary actions including blood pressure, salivation and vomiting.
• It also plays an important role in transmitting messages between spinal cord and brain.

• The heart is located between the lungs in the middle of the body.
• The heart comprises chambers, valves, vessels, wall, and conduction system.
• The lungs are a pair of spongy air-filled organs located on either side of the chest.
• It is used for respiration 
• The eye consists of the sclera, cornea, pupil, lens, retina, vitreous humor, and anterior & posterior chambers.