What kind of function does the brachial plexus have?
- It contain the nerves that, with only a few exceptions, are responsible for sensation (sensory function) and movement (motor function) of the arms, hands, and fingers. As the nerves travel from the neck to the axilla they are subject to injury, especially injuries that forcefully move the head away from the shoulder.
- 1 What is the brachial plexus made of?
- 2 What are the brachial plexus nerves?
- 3 What muscles does C1 3 innervate?
- 4 Where does the brachial plexus originate from?
- 5 Is cervical plexus and brachial plexus same?
- 6 How do you remember afferent or efferent?
- 7 What is a good mnemonic to remember the order of the CNS?
What is the brachial plexus made of?
The brachial plexus is formed by the anterior primary rami of C5 through T1 and provides sensory and motor innervation of the upper extremity. The brachial plexus is divided, proximally to distally into rami/roots, trunks, divisions, cords, and terminal branches.
What are the brachial plexus nerves?
The brachial plexus is a network of nerves in the shoulder that carries movement and sensory signals from the spinal cord to the arms and hands. Brachial plexus injuries typically stem from trauma to the neck, and can cause pain, weakness and numbness in the arm and hand.
What muscles does C1 3 innervate?
C1-C3: Longus capitis. C2-C3: Prevertebral muscles and sternocleidomastoid. C3-C4: Levator scapulae, trapezius and scalenus medius.
Where does the brachial plexus originate from?
The brachial plexus passes from the neck to the axilla and supplies the upper limb. It is formed from the ventral rami of the 5th to 8th cervical nerves and the ascending part of the ventral ramus of the 1st thoracic nerve. Branches from the 4th cervical and the 2nd thoracic ventral ramus may contribute.
Is cervical plexus and brachial plexus same?
The cervical plexus is formed from the C1–C4 spinal roots and is located in the lateral neck. It is the smallest of the plexuses. In comparison to the brachial plexus, iatrogenic neuropathies of the cervical plexus are rare or unrecognized.
How do you remember afferent or efferent?
A good way to remember afferent vs. efferent neurons is: Afferent Arrives, Efferent Exits. Afferent neurons are neurons whose axons travel towards (or bringing information to) a central point, while an efferent neuron is a cell that sends an axon (or carries information) away from a central point.
What is a good mnemonic to remember the order of the CNS?
Mnemonic for Order of Cranial Nerves
- Old: Olfactory.
- Operators: Optic.
- Occasionally: Oculomotor.
- Troubleshoot: Trochlear.
- Tricky: Trigeminal.
- Abducted: Abducens.
- Family: Facial.
- Veterans: Vestibulocochlear.