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What cranial nerve motor fibers to sternocleidomastoid and trapezius?
The sternocleidomastoid and trapezius muscles are controlled by the accessory cranial nerve. Some call it cranial nerve XI.
What cranial nerve is also known as the accessory nerve?
The accessory nerve is also known as cranial nerve XI. It is primarily responsible for innervating the sternocleidomastoid and trapezius muscles, facilitating shoulder elevation and head rotation. The nerve has both cranial and spinal components, with its cranial part originating from the brainstem and the spinal part arising from the upper cervical spinal cord.
Which cavity contains the spinal and cranial cavities?
The cranial cavity contains the brain, pineal and hypophysis cerebri, parts of the cranial and spinal nerves, blood vessels, meninges and cerebrospinal fluid.
Name the 2 subdivisions of the dorsal cavity what structures does each contain?
cranial which contains the brain and spinal which contains the nerves of the spinal cord.
Does the nerve going to the eyebrow go to the spinal cord?
There are 31 pairs of spinal nerves which originate in the spinal cord. There are twelve cranial nerves, which are referred to by Roman numerals. Ten of the twelve cranial nerves originate from the brainstem; the other two stem from the forebrain and thalamus. The nerve that is responsible for eyebrow movement is the VII cranial nerve, also known as the facial nerve. This is one of the ten cranial nerves originating from the brainstem.
What cranial nerve is involved in hyper extending and flexing the neck?
The spinal accessory nerve (cranial nerve XI) is involved in hyperextending and flexing the neck. This nerve innervates the trapezius and sternocleidomastoid muscles, which are involved in these movements.
What is nerve that contains filbers that both send and receive messages is called?
It is called a Mixed Nerve Example- all spinal nerves, and cranial nerves V, VII, IX, X.
What cranial nerve is used when rotating the head?
The spinal accessory nerve, or cranial nerve XI (eleven), is a purely motor nerve which innervates the trapezius and sternocleidomastoid muscles. The sternocleidomastoid muscles are used to turn the head. The Accessory nerve also provides somatic motor fibers to muscles of the soft palate, pharynx, and larynx (spinal and medullary fibers respectively.)
What is the area of the skin innervated by a single spinal or cranial nerve called?
Dermatome
What is the area of skin innervated by the single spinal or cranial nerve called?
Dermatome
Is the posterior interosseous nerve a cranial nerve or a spinal nerve?
what does ninth cranial nerve control? glossopharyngeal nerve is a mixed nerve, it has sensory and motor part. the sensory is at the poserior 1/3 of the tongue. It also is part of the pharyngeal plexus. (9,10,11) The motor part of the nerve ONLY supply the stylopharyngeus muscle!
What does the dorsal cavity contain?
cranial cavity, which contains the brain, and spinal cavity, formed by the vertebrae, which contains the spinal cord.
