LAB MANUAL FOR HUMAN A&P MAIN VERSION
4th Edition
ISBN: 9781266871016
Author: Martin
Publisher: MCG
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Textbook Question
Chapter 29, Problem 8PL
The normal patellar reflex response involves extension of the leg at the knee joint.
a. True ________
b. False ______
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Name the 5 components of a reflex arc in order. a. ______________________ b. ______________________ c. ______________________ d. ______________________ e. ______________________ 2. How many neurons are in a monosynaptic reflex arc? _______ How many synapses are in the integrating center? _______ 3. How many neurons are in a polysynaptic reflex arc? _______ How many synapses are in a polysynaptic reflex arc containing two interneurons in the integrating center? _______ 4. Which type of neuron does the sensory neuron synapse with in a monosynaptic reflex arc? ______________________ 5. Which type of neuron does the sensory neuron synapse with in a polysynaptic reflex arc? _______________________
Axons from the vestibular nerve project to each of the cranial nuclei that control the extrinsic eye muscles.
A. True
B. False
Fill in the blank:
The P wave corresponds to depolarization of the muscle fibers of the _______________________.
Chapter 29 Solutions
LAB MANUAL FOR HUMAN A&P MAIN VERSION
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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- During the monitoring of the patient in the light stage of anesthesia, the __________________ reflex remains present. a.Patellar b.Palpebral c.Pinnal d.Pharynxarrow_forwardSpinal nerves from different segments combine to form nerve plexuses. Nerves from which two plexuses combine to form the radial nerve? Group of answer choices A. lumbar and sacral plexuses B. brachial and sacral plexuses C. cervical and brachial plexuses D. cervical and sacral plexuses ____________________________________________________________________________ The resting membrane potential of a nerve cell is -70 mV. If threshold is -60 mV and a medication causes a patient's resting membrane potential to change to -75 mV, what is the likely outcome? Group of answer choices A. normal generation of action potentials B. it will be easier to generate an action potential C. it will be more difficult to generate an action potential D. facilitation will occur at the cell membranearrow_forwardFill in the blank: Effectors of a reflex arc are glands and _______________________.arrow_forward
- Fill in the blank: ______________________ muscles in the limbs are the effectors of a withdrawal reflex.arrow_forwardSeizures arise due to abnormal asynchronous electrical discharges from millions of neurons in the brain. A. True B. Falsearrow_forwardYou have a patient with a spinal cord transection at the C5 level. Answer the following questions about thatpatient. a. You ask the patient to close their eyes and use a reflex hammer to tap their patellar tendon. Will youobserve a stretch reflex and if so will it be normal? Explain your answer fully. b. Will the patient know when you tapped the patellar tendon if their eyes remain closed? Explain youranswer fully.arrow_forward
- V. Triceps Jerk a Reflex that assesses the nervous tissue between (and including) the C6, C7, and C8 nerve roots. b. It can be elicited by supporting your partner's arm with the elbow flexed at a 90° angle, sharply striking the posterior surface of the upper arm approximately 2 inches above the olecranon (bony "tip" of the elbow). c. Normal response: The triceps should twitch, and the elbow should extend. Label the feedback mechanism for this reflex. THEREH Binepe Incepaarrow_forwardAnswer the following questions A. Which of the following brain regions is a major convergence area for most sensory input before it is sent on to the cerebral cortex. a. hypothalamus b. cerebellum c. brainstem d. thalamusarrow_forwardDuring a procedure called a lumbar puncture,CSFsurrounding the meringues is withdrawn with a needle. a. This procedure generally is performed between L3 and L5.why do you think the fluid is withdrawn here rather than from higher up in the vertebral column?(hint:think about the structure and location of spinal cord b.often,the sampled CSF is tested for bacteria or virus if a brain infection is suspected.why would CSF sampled from the spinal cord give you information about the condition of the brain? c.would you withdraw CSF if the needle were accidentally inserted in to the epidural space instead of the subarachnoid space ?why or why not?arrow_forward
- 5) Describe what would happen to the myotatic (stretch) reflex in each of the following conditions (get larger,smaller, stay the same, or disappear). Be sure to explain your answers and describe what part of the reflex hasbeen affected by the treatment.a. A complete transection of the spinal cord at the C5 level (look at the dermatome picture in the slides)b. Destruction of the cells in the dorsal root ganglionc. Synaptic depression at the Ia/motor neuron synapsed. Partial destruction of the ventral rootarrow_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_forwardCarpal 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_forward
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