LABORATORY MANUAL FOR HUMAN ANATOMY & PH
4th Edition
ISBN: 9781260254426
Author: Martin
Publisher: MCG
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Textbook Question
Chapter 29, Problem 7PL
The posterior roots of spinal nerves contain the axons of the motor neurons.
a. True
b. False
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Students have asked these similar questions
This is a cross (transverse) section of a spinal cord, stained, as seen under a light microscope at low magnification. Label each of the following on the image.
The intercostal nerves between the ribs arise from which spinal nerve plexus? a. cervical b. brachial c. lumbar d. sacral e. none of them
A typical spinal nerve:
Select one:
is protected by the dura, arachnoid and pia mater
b. normally divides into four branches that will supply the thoracic region, the abdominal region, the pelvic region and the limbs
C. contains one nerve fibre and it's myelin sheath
d. is covered by the connective tissue called endomysium
e. attaches to the spinal cord via the dorsal and ventral roots
O a.
Chapter 29 Solutions
LABORATORY MANUAL FOR HUMAN ANATOMY & PH
Ch. 29 - The impulse over a motor neuron will lead to a. an...Ch. 29 - Stretch reflex receptors are called a. effectors....Ch. 29 - Stretch reflexes include ail of the following...Ch. 29 - Prob. 4PLCh. 29 - Prob. 5PLCh. 29 - The quadriceps femoris is the effector muscle of...Ch. 29 - The posterior roots of spinal nerves contain the...Ch. 29 - The normal patellar reflex response involves...Ch. 29 - A withdrawal reflex employs...Ch. 29 - Interneurons in a withdrawal reflex are located in...
Ch. 29 - A reflex arc begins with the stimulation of a...Ch. 29 - Effectors of somatic reflex arcs are...Ch. 29 - Prob. 2.5ACh. 29 - The effector muscle of the patellar reflex is the...Ch. 29 - The sensory stretch receptors (muscle spindles) of...Ch. 29 - The posterior root of a spinal nerve contains the...Ch. 29 - The normal plantar reflex results in...Ch. 29 - Stroking the sole of the foot in infants results...Ch. 29 - In a stretch reflex arc, when the agonist muscle...Ch. 29 - Synapses, whether excitatory or inhibitory, occur...Ch. 29 - Prob. 2.13ACh. 29 - Prob. 2.14A
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- Damage to the surface tissue of the spinal cord will most likely affecta. information processing within the spinal cord.b. the stimulation of sensory organs.c. communication between the peripheral nervous system and the brain.d. reflex arcs.arrow_forwardPredict the symptoms (both sensory and motor) you might experience if you suffered an injury to each of the following nerves:- a. Median nerve b. Common fibular nerve c. Femoral nerve d. Sciatic nerve e. Ulnar nervearrow_forwardA typical spinal nerve: Select one: a. normally divides into four branches that will supply the thoracic region, the abdominal region, the pelvic region and the limbs b. is covered by the connective tissue called epineurium c. attaches to the spinal cord via the dorsal root ganglia d. is protected by the dura, arachnoid and pia mater e. contains one nerve fibre and it's myelin sheatharrow_forward
- Match the description with the statement that best describes them spinal nerve receives sensory input from a specific area of skin carry motor impulses from brainstem "bundles of nerve fibers with a similar origin, destination and function" carry sensory impulses toward brainstem A. ascending tracts B. descending tracts C. spinal tracts D. dermatomearrow_forwardThe _______ serve the skin and musculature of the posterior body trunk at their emergence from the spinal cord; while the ventral rami of spinal nerves pass anteriorly as the __________ to supply the muscles of intercostal spaces, and the skin and muscles of the anterior and lateral trunk. A. dorsal rami, ventral rami B. dorsal rami, intercostal nerves C. dorsal root, ventral root D. nerve plexues, spinal nerves The white matter of spinal cord is bisected by fissures: the more open ventral fissure is called the ventral _____________ and the dorsal one is the shallow dorsal ______________. A. funiculus, horn B. median fissure, median sulcus C. median sulcus, median fissure D. horn, funiculus n gray matter of spinal cord, the central butterfly shaped region, contains dorsal and anterior _____; on both lateral side of the spinal cord, there are the dorsal and ventral ______ for interneurons and sensory fibers that…arrow_forwardIn adults, the spinal cord is not the same length as the vertebral canal, and most of the lumbar part of the spinal cord is within A. the coccyx. B. the sacrum. C. the cervical vertebrae. D. the thoracic vertebrae. E. the cauda equina.arrow_forward
- Which of the following does not describe the spinal nerves? A.They are created through a combination of dorsal and ventral roots. B. They exit the vertebral column through intervertebral spaces. C. Some are made up of only sensory fibers, while others are made up of motor fibers. D. There are thirty-one spinal nerves. They are named based on where they exit the vertebral column.arrow_forwardWhere is the anterior (ventral) root located in the sequence of structures through which motor impulses pass as they descent from the brain and leve the spinal cord? A. Between anterior (ventral) gray horn and spinal nerve B. Between spinal nerve and posterior (dorsal) root ganglion C. Between anterior (ventral) gray horn and posterior (dorsal) gray horn D. Between white column and posterior (dorsal) gray hornarrow_forwardWhich of the following describes the ascending tracts and the descending tracts of the spinal cord? A. The ascending tracts contain motor impulses, and the descending tracts contain sensory information.B. Both the ascending and descending tracts contain sensory information.C. The ascending tracts contain sensory information, and the descending tracts contain the motor impulses.D. Both the ascending and descending tracts contain motor impulses.arrow_forward
- Describe the spinal cord according to: A. location B. shape and length C. vertebral levels of upper and lower extremities D. distribution of gray and white matter E. anatomical enlargements F. features at distal end G. attachment of spinal nervesarrow_forwardWhich of the following statements regarding sciatic nerve is correct? a. Arises from L3/4/5/S1/2 b. Emerges from the lower border of piriformis c. Most commonly divides onto common peroneal and tibial branches in the middle of the hamstring compartment d. Can be injured by intramuscular injections in the upper outer quadrant of the buttock e. Gives no branches in the gluteal compartmentarrow_forwardWrite the name of each cranial nerve next to the Roman numeral representative of that nerve. Then draw a line to link each nerve to its characteristics. Some characteristics may link to VII. more than one nerve, while other nerves may have more than one characteristic. a. Mixed branch controls chewing and detects sensations in lower jaw b. Links the retina to the brain's visual cortex; III damage causes blindness in part or all of a visual field IV c. Regulates voluntary movements of the eyelid and eyeball V VI d. Damage to sensory branch causes loss of sensation in upper face VII VIII e. Governs tongue movements, swallowing, and gagging IX f. Damage causes tongue to deviate toward injured side X XI g. Damage here can cause a drooping eyelid and dilated pupil XII h. Damage causes sagging facial muscles and distorted sense of taste i. Longest and most widely distributed cranial nerve j. Concerned with hearing and balance k. Plays a key role in many heart, lung, digestive, and urinary…arrow_forward
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