Autonomic Nervous System Flashcards
Spinal Nerves (8 cards)
Describe the cervical plexus and its associated nerves.
The cervical plexus is formed by the cervical nerves C1 to C8 and is responsible for supplying nerves to the neck and parts of the shoulder.
Explain the role of the brachial plexus.
The brachial plexus is a network of nerves that originates from the spinal nerves C5 to T1, responsible for innervating the shoulder, arm, and hand.
Define the thoracic nerves and their range.
The thoracic nerves consist of 12 pairs of spinal nerves, labeled T1 to T12, which innervate the thoracic region and parts of the abdominal wall.
How do the lumbar plexus and lumbar nerves function together?
The lumbar plexus is formed by the lumbar nerves L1 to L5, providing motor and sensory innervation to the lower back, pelvis, and parts of the legs.
Describe the sacral plexus and its significance.
The sacral plexus is formed by the sacral nerves S1 to S5 and is crucial for innervating the pelvic region and lower limbs.
What is the cauda equina and its anatomical significance?
The cauda equina is a bundle of spinal nerves and nerve roots located in the lower vertebral canal, resembling a horse’s tail, and is significant for providing nerve function to the lower body.
Explain the function of the coccygeal nerve.
The coccygeal nerve, also known as Co1, is the terminal nerve of the spinal cord that innervates the skin over the coccyx.
How do cervical and lumbar enlargements differ in function?
Cervical enlargement is associated with nerves that control the upper limbs, while lumbar enlargement is related to nerves that control the lower limbs.
