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It supplies the stomach, iv Pulmonary Nerve: It innervates the lungs.
Vagus is mixed in nature because it carries both motor and sensory fibres. These nerves arise from the spinal cord and are normally nine pairs, sometimes 10th unpaired nerve is also seen. Rarely 10 pairs of spinal nerves are found.
As soon as two roots come out of the vertebral column, they unite to form a very small branch, which immediately divides into three branches. It is a short branch supplying the skin and muscles of the dorsal side of the trunk.
It is thicker, larger and supplies the skin and muscles of the ventral and lateral side of the trunk mostly, but in some cases it is also connected with the limbs. It is a short fine branch, which arises near the origin of each ventral branch and joins sympathetic cord of its side.
Distribution, Functions and Nature of Spinal Nerves: Except the first pair of spinal nerve, all are distributed to the skin and muscles of the respective parts of the body.
They carry impulses from the skin receptors to the spinal cord and from the spinal cord to the muscles. Thus, their nature is mixed. The first spinal nerve is also known as hypoglossal Nerve. It supplies muscles of the tongue, floor of the buccal cavity and some muscles of the shoulder and back.
It also takes part in the formation of brachial plexus.
It is a motor branch. The hypoglossal nerve, the second and the third spinal nerves form the brachial plexus. From the brachial plexus, the second nerve continues as a brachial nerve to the skin and muscles of fore-limb.
The 4th, 5th and 6th spinal nerves supply the skin and muscles of the body wall of the belly region.
The 7th, 8th and 9th spinal nerves form the sciatic plexus, which gives off branches to the skin and muscles of the abdomen and hind-limbs. This plexus also supplies some branches to the large intestine, genital ducts and urinary bladder.
The tenth nerve is also known as coccygeal nerve, which is not commonly found in Rana. Whenever this nerve is present, it emerges from the urostyle through an aperture and joins the sciatic plexus. The fine branches of 10th nerve supply the urinary bladder and cloaca.
There is a noteworthy point that the roots of seventh to tenth nerves first run inside the neural canal of the vertebral column for some distance to form a horse-tail shaped structure, the cauda equina.About Marquette University academics, facts, tuition and costs, community service, campus, the people at Marquette.
Questions about the GI tract. Linked to the "Maturity 2" case unit. Anatomy And Physiology Of The Digestive System Essay Sample The digestive system is basically a tube running through the body from the mouth to the anus.
The organs of the digestive system include the oral cavity (mouth), esophagus, stomach, small and large intestine and rectum. Anatomy and Physiology - Topic: Digestive system.
Objectives: Students will trace proteins, carbohydrates, and lipids from the mouth through its absorption and the elimination of waste. This online anatomy and physiology course covers all the bodily systems playing a major role in human anatomy and provides an accredited CEU Certificate at .
Anatomy And Physiology II -- Digestive System - Part A Quiz Here is a quiz that test you over the structures that you would find in an Anatomy and Physiology II Lab. Good Luck! Questions: 11 | .