Brain | MCQs

Explanation

The brain is divided into three primary parts:

• Forebrain (includes the cerebrum, thalamus, and hypothalamus)
• Midbrain (connects the forebrain to the hindbrain, and regulates auditory and visual processing)
• Hindbrain (includes the cerebellum, pons, and medulla oblongata, and regulates movement, balance, and basic bodily functions)

Explanation

The Brain is the "boss" of the human body, serving as the control center for all bodily functions, including:

• Movement
• Sensation
• Perception
• Emotions
• Thoughts
• Regulation of various bodily systems

Explanation

The structure of the brain is similar to the structure of a Walnut, with both having:

• A hard outer layer (cranium vs. shell)
• A wrinkled surface (brain's cerebral cortex vs. walnut's surface)
• A distinct left and right half (brain's hemispheres vs. walnut's halves)

Explanation

The Central Nervous System (CNS), which includes the brain and spinal cord, controls all the vital functions necessary for living, including:

• Breathing
• Maintaining body temperature
• Thinking
• Feelings
• Heartbeat

Explanation

• Sound waves first enter the ear through the Ear Canal, also known as the external auditory meatus.
• From there, they travel to the eardrum, then to the cochlea, and finally to the auditory nerve.

Explanation

• The nose contains the odor receptors that detect smells.
• But the olfactory bulb is the part of the brain.
• It is receives and processes the information from those receptors.

Explanation

• The optic nerve is the nerve that carries visual information from the retina to the brain.
• Where it is interpreted and understood.
• It is responsible for transmitting electrical signals from the photoreceptors in the retina to the brain.
• It allowing us to see and interpret visual information.

Explanation

• The breathing centre of human body is lungs.
• Lungs are two soft spongy large balloon like organ located in the chest.
• The delicate lungs are protected by a cage of bones. This cage is called the ribcage.

Explanation

• The adult human brain weighs about 3 pounds (1,300-1,400 g).
• The adult human brain is about 2% of the total body weight.
• The average human brain is 140 mm wide.
• The average human brain is 167 mm long.

Explanation

• Skull forms a protective covering for the brain.
• The main and overall function of the skull is to protect the brain and sensory organs and support facial structures.