The basic difference between the cranial nerves and the spinal nerves is the role they play, in helping our bodies to function properly. The body has what is called a peripheral nervous system consisting of more than 100 billion nerve cells, which run all throughout our body, making connections with our brain, as well as other parts of the body, and sometimes with each other.
The peripheral nervous system is composed of two systems the somatic and autonomic nervous system. These nerves connect with both the brain and the spinal cord. Our muscles are controlled by voluntary and sensory receptors in the skin, this is an example of the somatic system. The autonomic system connects the brain stem and the spinal cord to the internal organs, and also regulates the body processes, like heart rate and blood pressure, stomach acid, and the speed of food travelling through our digestive systems.
The autonomic nervous system is divided into sympathetic and parasympathetic divisions. Each has a job to do within the body. The sympathetic division helps us to deal with stressful or emergency situations. They help us to know, when to fight and when to take flight. The parasympathetic division helps the body to function, in normal situations. Both divisions regulate our pulse, breathing and blood pressure to keep them stable.
The cranial nerves connect our brain to our eyes, ears, nose, throat and other parts of our head, neck and trunk. There are twelve (12) pairs of cranial nerves. The nerves, which connect the spinal cord to with other parts of the body are called spinal nerves. The brain communicates or connects with other parts of the body through the spinal nerves. We have thirty-one (31) pairs of spinal nerves.
Spinal nerves and cranial nerves are connected with the somatic and the autonomic parts of the peripheral nervous system. Some nerves are sensory nerves and other nerves are motor nerves, depending upon their function within the body.
ulna
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!
The second cranial nerve is the optic nerve.
The nerves involved in diplopia include three cranial nerves: the oculomotor nerve (third cranial nerve), the abducens nerve (sixth cranial nerve), and the trochlear nerve (fourth cranial nerve).
Cranial nerve 4 (IV) is the trochlear nerve.
Spinal Accessory Nerve
The sternocleidomastoid and trapezius muscles are controlled by the accessory cranial nerve. Some call it cranial nerve XI.
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.
Spinal accessory
ulna
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.)
Dermatome
Dermatome
cranial nerve I: olfactory:smell cranial nerve II:optic:vision cranial nerve III: oculomotor: 4 of 6 eye muscles cranial nerve IV: trochlear: cranial nerve V: Trigeminal cranial nerve VI: Abducens cranial nerve VII: Facial cranial nerve VIII: Vestibulochlear: hearing cranial nerve IX: Grosspharnxgeal: saliva formation cranial nerve X: Vegus cranial nerve XI: Acessory Spinal: trapizious movement cranial nerve XII: Hypoglosseal: toungue movement
no this term usually applies to that portion of the root that lies between the spinal cord and the intervertebral canal of the spinal column. Is inflammation of the root of spinal nerve
The vagus nerve is the tenth cranial nerve. It is considered as one of the most important of all the twelve cranial nerves. These twelve cranial nerves, the vagus nerve included, emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from the vertebral column. The vagus nerve originates in the medulla oblongata, a part of the brain stem.
Inside the skull. It is a "cranial nerve" (thus not from the spinal cord) and goes directly from the brain to the inner ear.