Concept explainers
In a patient who developed carpal tunnel syndrome, the nerve injury began as a neurapraxia and then became an axonotmesis. (1) Recall what nerve is affected in carpal tunnel syndrome (See Section 8.2c, Clinical Application). (2) Explain the terms
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Human Anatomy
- Carpal tunnel syndrome is a modern medical problem created by repetitive tasks such as keyboarding on computers or doing assembly line work. in this condition nerves in the wrist may become pinched, producing irritating, tingling sensations in the hands and lower arms. a) what is the source of the tinglingarrow_forwardWill pain be felt upon stimulation of the central stump of the left vagus nerve if it was ligated? Explainarrow_forwardPart A Carpal tunnel syndrome is a condition in which the median nerve is compressed as it travels through a narrow passage in the wrist. Explain how hand dynamometry might be used to assess a patient's need for surgery to release carpal tunnel compression. O Hand dynamometry measures electrical activity of the median nerve, which will be reduced if the median nerve is compressed. O Hand dynamometry measures grip strength, which will be reduced if the median nerve is compressed. O Hand dynamometry measures grip strength, which will be increased if the median nerve is compressed. O Hand dynamometry measures electrical activity of the median nerve, which will be increased if the median nerve is compressed. Submit Request Answer Provide Feedback < Return to Assignmentarrow_forward
- 1. In addition to blood, which fluid was leaking from Mr. Hancock’s right ear? Which structures must have been damaged to allow this to happen? Why would this lead Mr. Hancock’s doctors to give him antibiotics? Why was the head of his bed elevated? 2. Each of the four observations on Mr. Hancock’s chart indicates damage to a cranial nerve. Identify each cranial nerve involved. If applicable, identify which specific branch of that nerve is involved. Mr. Hancock was given a course of antibiotics, the head of his bed was elevated by 30°, and he was placed under close observation. After 24 hours, doctors noted that the right side of Mr. Hancock’s face showed signs of drooping, with incomplete eye closure and asymmetric facial expressions. Mr. Hancock’s right eye showed minimal tear production. The weakness and asymmetry on the right side of his face began to subside after a few days, and the leak of fluid from his ear stopped, but he continued to complain of paresthesia, diplopia, and an…arrow_forwardWhen removing cerebrospinal fluid during a spinal tap, the needle is inserted below L2. Explain why spinal taps are not done above this level.arrow_forwardWhat structural type are the sensory nerves of pain in the skin ? (1) Tripolar (2) Unipolar (3) Bipolar (4) Motor (5) Multipolar (Please provide the answer with proper explanation)arrow_forward
- was the fol Match the following: The obturator and femoral nerves branch from this plexus. Striking the "funny bone" (ulnar nerve) may cause injury to a nerve of this plexus. Trauma to a nerve of this plexus may cause wrist drop. A fall or improper administration of an injection to the buttocks may injure a nerve of this plexus. The phrenic nerve branches from this plexus. [Choose] [Choose ] Choose [Choose] [Choose]arrow_forwardComplete the table by filling in the missing nerve/ foramen and classification. (13) Trigeminal CP: a. CN – Cranial Nerve CP – Cranial Passage |(12) (1) b. Vagus (11) Facial CP:- C. CP: (10) CN: - Jugular foramen Vestibulo cochlear |(2) CP: (9) Trochlear 12 CRANIAL СР: CN: (3) - Cribriform plate NERVES SENSORY (8) CN - Sup. orbital fissure Optic (4) CP: (7) Accessory CP: Oculomotor (6) CP: CN: (5) (14) - Ant. condylar canalarrow_forwardWhile moving a large box in his garage, Carl hurt his back. Withinhours, the pain in his back was radiating down the medial side of hisleft thigh and knee. It was especially difficult for Carl to flex his lefthip and extend his left knee. He could not stand the pain, so he wentto the emergency room. Radiographs and an MRI revealed a bulgingintervertebral disk. Which spinal nerve was most likely affected, andwhy were Carl’s motor movements affected? Also, explain the referredpain.arrow_forward
- You are called to assess a pt complaining of severe back pain originating at L4 and running down the back of his right thigh and inner right leg. You also observe an associated weakness and sensory deficit in the right leg. which of the following would be the most consistent with these findings A) Sciatica B) Cerebal Palsy C) L4 Lumbar Fracture D) Cerebrovascular accidentarrow_forwardA 50-year-old woman comes to the physician because of a 1-month history of shaking of her right arm when writing or lifting a cup. Physical examination showscoarse action tremor of the right upper extremity that worsens as she approaches the target. This patient most likely has damage to which of the following components of the brain?A) CerebellumB) Internal capsuleC) Substantia nigraD) Subthalamic nucleusE) Supplementary motor cortexarrow_forwardMatch the Cranial nerve to its functions. a. Movement of neck and shoulders b. Swallowing, sense of taste, and saliva secretion c. Equilibrium and hearing d. Movement of tongue, swallowing, and speech e. Eye movement (including medial) f. Sense of smell g. Eyeball and eyelid movement h. Eye movement (including lateral) i. Smooth muscle sensory and motor control in throat, lungs, heart, and digestive system j. Vision k. Facial expressions and sense of taste I. Facial sensation and chewing 1. Olfactory nerve 2. Optic nerve 3. Oculomotor nerve 4. Trochlear nerve 5. Trigeminal nerve 6. Abducens nerve I a a a a a > < Based on the Functions Cranial Nerve Classification Based on the Origin Cranial Nerve Functions Applying Classroom Knowledge to Clinical Practicearrow_forward