Practice MCQ Questions and answers on Biology-GK

All the parts of the brain work together, but each part has its own special properties. The brain can be divided into three basic units: the forebrain, the midbrain, and the hindbrain.

Central nervous system (specifically cerebellum) is the control centre of a reflex action. The impulse for reflex action travels to and from spinal cord.

Cerebro spinal fluid protects the brain tissue from injury when jolted or hit, by providing a fluid buffer that acts as a shock absorber from some forms of mechanical injury.

The cerebrum is the largest part of the brain. It is responsible for memory, speech, the senses, and emotional response. It is divided into four sections called lobes: the frontal, temporal, parietal, and occipital.

The cerebellum (back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.

The main thinking part of the brain is forebrain.

Alcohol is absorbed into the lining of the stomach and then passes directly into the bloodstream and reaches your brain within minutes after consumption. A person's judgment is the first thing affected after drinking an alcoholic beverage.

The largest part of the brain, the cerebrum has two hemispheres (or halves).

Synapse, also called neuronal junction, the site of transmission of electric nerve impulses between two nerve cells (neurons) or between a neuron and a gland or muscle cell (effector). A synaptic connection between a neuron and a muscle cell is called a neuromuscular junction.

Neurons, or nerve cell, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites).