Located beneath the large muscles on either side of the neck, or the sternocleidomastoids, the carotid sheath, part of the cervical band of tissue, or fascia, encloses the carotid artery, the internal jugular vein and the vagus nerve. World...
Cranial nerves are nerves that emerge directly from the brain as opposed to the spinal cord. There are 12 pairs of cranial nerves with motor and sensory functions. Problems with cranial nerves may affect a motor nerve, called a cranial nerve...
The mouth can be involved in several neurological disorders. The nerves that innervate the muscles of the mouth can be affected by a variety of processes, occurring anywhere along their paths, or in the motor control centers in the brain. Diseases...
Of the 12 cranial nerves that exit from the brain through openings in the skull, five serve functions having to do with the mouth. Some of these are sensory nerves, which allow the brain to detect sensation in and around the mouth. Some are motor...
There are two ways that nerves exit the central nervous system and become part of the peripheral nervous system--through openings in the vertebrae of the spine or through openings in the skull, or cranium. Twelve cranial nerves conduct signals to...
There are 12 paired cranial nerves that exit the skull under the brain's surface that extend to various parts of the head, neck, chest and abdomen. The cranial nerves comprises three nerve types: motor nerves that send an impulse signal to a...
The brain stem links the spinal cord to the brain. Messages between the brain and the rest of the body pass through the brain stem in large nerve bundles. However, the brain stem is more than a nerve impulse highway. According to Dr. Richard...
The human brain can be anatomically divided into three main sections, or layers. The outermost part is called the forebrain (the prosencephalon); the middle layer is called the midbrain (the messancephalon); and the innermost part of the brain is...
The head is complex, but functional. Like the rest of the body, the head consists of skin, bone, blood vessels and nerves. However, the head also contains most sensory organs, such as the nose, eyes, ears and mouth. These structures, along with...
Cranial nerves determine your ability to taste, smell, see and maintain your balance. Damage to some nerves, such as the olfactory nerve related to your sense of smell, will not respond to exercises as treatment. Other nerves respond well to a...
Cranial nerves are a set of 12 nerve pairs that connect from the brain to areas of the face, neck, shoulders and some internal organs. The nerves run through holes in the skull. Each set of nerves are paired for service on each side of the body....
There are 12 cranial nerves that pass directly from the brain through openings in the skull. Each of these nerves serves a unique function: some provide sensory information to the brain; some allow messages to pass from the brain to muscles,...
The human digestive tract, while living, measures approximately 20 feet long. Your mouth is the entrance, and your anus is the main exit. When you swallow foods or beverages, you also swallow air, which contains oxygen and nitrogen. Carbonated...
