Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Peripheral Nervous
Peripheral Nervous System
| Question | Answer |
|---|---|
| How many pairs of spinal nerves are connected to the spinal cord? | Thirty-one |
| List the pairs of spinal nerves and how many there are | 8 Cervical Nerve Pairs (C1-C8)12 Thoracic Nerve Pairs (T1-T12)5 Lumbar Nerve Pairs (L1-L5)5 Sacral Nerve Pairs (S1-S5)1 Coccygeal Nerve Pair |
| What is the Cauda Equina? | It describes the appearance of the lower end of the spinal cord and its spinal nerves as a horses' tail. |
| All Spinal Nerves are __________ __________ | mixed nerves |
| What is the RAMUS? | One of several large branches formed after each spinal nerve emerges from the spinal cavity. Example: Dorsal Ramus, Ventral Ramus, etc. |
| Supplies somatic motor and sensory fibers to smaller nerves that innervate the muscles and skin of the posterior surface of the head, neck, and trunk. | The Dorsal Ramus |
| Autonomic motor fibers split from the _______ ________ and head toward a ganglion of the sympathetic chain. | The Ventral Ramus |
| ________ and _________ fibers innervate muscles and glands in the extremities and lateral and ventral portions of the neck and trunk. | Motor and sensory |
| Complex networks formed by the ventral rami of most spinal nerves subdividing and then joining together to form individual nerves | Plexuses |
| Each __________________ _________ that emerges contains all the fibers that innervate a particular region of the body | individual nerve |
| What does the word "plexus" mean? How many pairs are there? | "braid", Four pairs |
| Name the 4 pairs of Plexuses | Cervical, Brachial, Lumbar, Sacral and Coccygeal |
| What do the nerves emerging from the cervical plexus innervate? | The muscles and skin of the neck, upper shoulders, and part of the head. |
| What nerve innervates the diaphragm? | The phrenic nerve |
| What do the nerves emerging from the brachial plexus innervate? | The lower part of the shoulder and the entire arm |
| The brachial plexus is made up of the ventral rami of ____ through ____. | C5 - T1 |
| The ___________ nerve exits the lumbar plexus, divides in many branches, and innervates the thigh and leg | The femoral nerve |
| The tibial, common peroneal, and sciatic nerves exit the ___________ plexus and supply nearly all the skin of the leg, posterior thigh muscles, and leg and foot muscles. | The sacral plexus |
| Region of skin surface area supplied by afferent (sensory) fibers of a given spinal nerve | Dermatome |
| Skeletal muscle(s) supplied by efferent (motor) fibers of a given spinal nerve. | Myotome |
| How many pairs of cranial nerves connect to the brain (brainstem)? | Twelve |
| __________ cranial nerve - made up of sensory andmotor neurons | Mixed |
| __________ cranial nerve - made up of sensory neurons only | Sensory |
| __________________ nerve - mainly axons of motor neurons and a small number of sensory fibers | Motor cranial nerve |
| Which nerve is composed of axons of neurons whose dendrites and cell bodies lie in nasal mucosa and terminate in olfactory bulbs | Olfactory nerve |
| Nerve composed of axons from the innermost layer of sensory neurons of the retina and carries visual infor from the eyes to the brain | Optic nerve |
| Fibers originate from cells in the occulomotor nucleus and extend to some of the external eye muscles. | Occulomotor nerve |
| Motor fibers originate in cells of the midbrain and extend to the superior oblique muscles of the eye | Trochlear nerve |
| Twelve pairs of these nerves connect to the under-surface of the brain, mostly on the brainstem. They pass through small foramina in the cranial cavity of the skull. | Cranial nerves |
| Name the three branches of the Trigeminal nerve | 1. the opthalmic nerve2. the maxillary nervee3. the mandibular nerve |
| A motor nerve with fibers originating from a nucleus in the pons on the floor of the 4th ventricle and extending to the lateral rectus muscles of the eye. | Abducens nerve |
| Motor fibers originate from a nucleus in the lower part of the pons and extend to superficial muscles of the face and scalp | Facial nerve |
| Name the nerve fibers that originate in the semi-circular canals in the inner ear and transmit impulses that result in sensations of equibrilium. | Vestibular Nerve Fibers |
| Name the nerve fibers that originate in the organ of the Corti in the cochlea of the inner ear and transmit impulses that result in sensations of hearing | Cochlear Nerve Fibers |
| Composed of sensory, motor, and autonomic nerve fibers and supplies fibers to tongue, parynx and carotid sinus. | Glossopharyngeal nerve |
| Contains both sensory and motor fibers with many widely distributed branches. Sensory fibers supply the pharynx, larynx, trachea, heart, carotid body, lungs, bronchi, esophagus, stomach, small intestine and gall bladder. | Vagus nerve |
| a motor nerve that is an "accessory" to the vagus nerve. It innervates thoracic and abdominal viscera, pharynx, larynx, trapezius, and sternocleidomastoid. | Accessory nerve |
| composed of motor and sensory nerve fibers. The motor fibers innervate the muscles of the tongue. Contains sensory fibers from proprioceptors in the muscles of the tongue. | Hypoglossal nerve |
| Two functional divisions of the peripheral nervous system are: | 1. Afferent division (sensory)2. Efferent division (motor) |
Created by:
radkct
Popular Radiology sets