The brachial plexus is a network of nerves that originates from the spinal cord in the neck and extends through the axilla, providing motor and sensory innervation to the upper limb. It is crucial for the function of the shoulder, arm, forearm, and hand, and injuries to this network can result in significant impairment or loss of function in these areas.

Brachial Plexus

brachial plexus

network of nerves

The spinal cord is a crucial component of the central nervous system, acting as a conduit for signals between the brain and the rest of the body. It plays a vital role in motor control, sensory perception, and reflex actions, making it essential for both voluntary and involuntary bodily functions.

spinal cord

axilla

Motor innervation refers to the process by which motor neurons transmit signals from the central nervous system to the muscles, resulting in muscle contraction and movement. It is a critical component of the neuromuscular system, enabling voluntary and involuntary movements essential for daily functioning and survival.

Motor Innervation

Sensory innervation refers to the supply of nerves that convey sensory information from the body's periphery to the central nervous system, enabling the perception of stimuli such as touch, temperature, and pain. This process is crucial for the body's ability to respond to its environment and maintain homeostasis through feedback mechanisms.

sensory innervation

upper limb

function of the shoulder

Function of the arm

Function of the forearm

Function of the hand

Injuries to the brachial plexus

significant impairment

Loss of function refers to a mutation or alteration in a gene that results in reduced or abolished activity of the gene product, often leading to a decrease in the normal function of a biological process. This concept is crucial in understanding genetic disorders and diseases, as it helps identify how specific genetic changes can lead to functional deficiencies in organisms.

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