Human Anatomy (8th Edition) - Standalone book
8th Edition
ISBN: 9780321883322
Author: Frederic H. Martini, Robert B. Tallitsch
Publisher: PEARSON
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Chapter 14, Problem 13RFT
The brachial plexus
(a) innervates the shoulder girdle and the upper extremity.
(b) is formed from the ventral rami of spinal nerves $$.
(c) is the source of the musculocutaneous, radial, median, and ulnar nerves.
(d) all of the above
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A 63-year-old woman comes to the physician because of low back pain for 5 days. While she sits upright on the examination table, there is weakness of the right lower extremity when she extends it at the knee against the physician's resisting hand, Injury to which of the following nerves most likely accounts for this weakness?
A) Common fibular (peroneal)
B) Femoral
C) Obturator
D) Sciatic
E) Tibial
Which of the following is NOT true in adults? (A) The tapering end of the spinal cord may terminate as high as T12 or as low as L3. (B) The first cervical nerves lack dorsal roots in 50% of people. (C) The coccygeal nerve may be absent. (D) The terminal filum is the vestigial rem- nant of the caudal part of the spinal cord that was in the tail of the embryo. (E) The spinal cord has a lumbar enlargement for the lower limb but no equivalent enlargement for the smaller upper limb.
the bundle of fibers that the spinal cord continues down is called the ........................
Chapter 14 Solutions
Human Anatomy (8th Edition) - Standalone book
Ch. 14 - Match each numbered item with the most closely...Ch. 14 - Prob. 2RFTCh. 14 - Prob. 3RFTCh. 14 - Prob. 4RFTCh. 14 - Prob. 5RFTCh. 14 - Prob. 6RFTCh. 14 - Prob. 7RFTCh. 14 - Prob. 8RFTCh. 14 - Prob. 9RFTCh. 14 - Match each numbered item with the most closely...
Ch. 14 - Label the following structures on the accompanying...Ch. 14 - Prob. 12RFTCh. 14 - The brachial plexus (a) innervates the shoulder...Ch. 14 - Prob. 14RFTCh. 14 - Prob. 15RFTCh. 14 - Prob. 16RFTCh. 14 - Prob. 17RFTCh. 14 - Prob. 18RFTCh. 14 - Prob. 19RFTCh. 14 - Prob. 20RFTCh. 14 - Prob. 21RFTCh. 14 - Prob. 1RCCh. 14 - Prob. 2RCCh. 14 - Tingling and numbness in the palmar region of the...Ch. 14 - Prob. 4RCCh. 14 - Prob. 5RCCh. 14 - Prob. 6RCCh. 14 - Prob. 7RCCh. 14 - Prob. 8RCCh. 14 - Prob. 9RCCh. 14 - Why is it important that a spinal tap be done...Ch. 14 - Prob. 1CTCh. 14 - Prob. 2CTCh. 14 - Prob. 3CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Choose the correct answer, and explain why it is correct. Through which pair of intervertebral foramina do spinal nerves L5 leave the vertebral canal? (a) holes in the sacrum, (b) just superior to vertebra L5, (c) just superior to S1, (d) just inferior to S4.arrow_forwardAreas of the body where no slow fibers would be found include the, (a) back and calf muscles. (b) eye and hand. (c) chest and abdomen. (d) a, b, and c are correct.arrow_forwardSketch the spinal cord in cross section, and label the following structures: (a) lateral funiculus of white matter, (b) ventral root, (c) ventral horn of gray matter, (d) central canal, (e) dorsal root ganglion, (f) dorsal column tracts: fasciculus gracilis and fasciculus cuneatus, (g) ventral corticospinal tract, (h) lateral corticospinal tract.arrow_forward
- Which statement is true regarding the spinal cord? a) The interior horns of the spinal cord receive information from the body b) The spinal cord is surrounded by the Dura matter only c) The spinal cord terminates into the upper thoracic region d) The lower lumbar region doesn't contain a spinal cord but rather a collection of nerve roots called the cauda equinaarrow_forwardMatch the cranial nerves to the body parts or functions that they affect. More than one nerve pair may correspond to the same structure or function. (1) olfactory nerves (I) (2) optic nerves (II) (3) oculomotor nerves (III) A. vision B. hearing and equilibrium C. muscles of the larynx, pharynx, soft palate, sternocleidomastoid and trapezius muscles (4) trochlear nerves (IV)(5) trigeminal nerves (V)(6) abducens nerves (VI)(7) facial nerves (VII)(8) vestibulocochlear nerves (VIII)(9) glossopharyngeal nerves (IX)(10) vagus nerves (X)(11) accessory nerves (XI)(12) hypoglossal nerves (XII)D. heart, various smooth muscles and glands in the thorax andabdomenE. taste, facial expressions, secretion of tears and salivaF. sense of smellG. tongue movements and swallowingH. face and scalpI. eye movementsarrow_forward19) which of the following would have the largest nerve to fiber ratio? ( largest motor unit) a) superior rectus(extraocular muscle) b) dorsal interossei( hand intrinsic) c) abductor pollicis ( hand intrinsic) d) quadricepsarrow_forward
- Which of the following is false regarding nerve plexuses? A) Nerve plexuses occur in the cervical, brachial, lumbar and sacral regions. B) Nerve plexuses involve only the dorsal rami. C) Nerve plexuses are interlacing nerve networks, so that each branch of a plexus contains fibers from several spinal nerves. D) Because of nerve plexuses, each muscle in a limb receives its nerve supply from more than one spinal nerve. E) Because of nerve plexuses, damage to a single spinal segment or root cannot completely paralyze any limb muscle. In a spinal reflex, integration occurs in the cerebral cortex in the brain stem in the thalamus in the spinal cord in the cerebellum True or false. The amplitude of a sound wave determines the pitch of a sound, while the sound intensity is determined by the wavelength of a sound wavearrow_forward3) Which cranial nerves control the zygomaticus muscle groups and the orbicularis oculi muscles? a) abducens nerves b) oculomotor nerves c) accessory nerves (cranial branch) d) facial nervesarrow_forwardWhich of the following parts of a neuron occupies the gray matter in the spinal cord? (a) tracts of long axons, (b) motor neuron cell bodies, (c) sensory neuron cell bodies, (d) nerves.arrow_forward
- The cranial nerve is actually an extension of the brain, not a nerve at all! O oculomotor (1II) O optic (II) facial (VII) O olfactory (I)arrow_forward(a) What are the superior and inferior boundaries of the spinal cord in the vertebral canal? (b) A correctly executed lumbar spinal tap could poke the cauda equina or filum terminale, but not the conus medullaris. Explain.arrow_forwardWhich statement is true regarding a spinal (peripheral) nerve? A) they can contain afferent axons only B) each nerve ending contains a single axon C)They innervate all regions of the body, including the head D) there are 31 pairs of spinal nervesarrow_forward
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