BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 29, Problem 6SA
Summary Introduction
Introduction:
The peripheral nervous system present in vertebrates is involved in passing and retrieving messages from the central nervous system. The somatic nervous system and the autonomic nervous system are the two functional divisions of the peripheral nervous system. The somatic nervous system is involved in controlling the action of skeletal muscles and also relaying sensory signals related to movement and external conditions.
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In sustained, moderate exercise, skeletal muscle is predominantly using ______________ as its energy source. a. amino acids b. glucagon c. fatty acids d. creatine phosphate
When a higher voltage is applied to the skeletal muscle, the force of contraction _____ and recruitment of more motor units occurs called ________ summation.
A. increases, spatial
B. increases, temporal
C. decreases, temporal
D. decreases, spatial
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Chapter 29 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 29 - ______ relay messages from the brain and spinal...Ch. 29 - Prob. 2SACh. 29 - Action potentials occur when ______. a. potassium...Ch. 29 - Neurotransmitters are released by _______. a. axon...Ch. 29 - Prob. 5SACh. 29 - Prob. 6SACh. 29 - Prob. 7SACh. 29 - Prob. 8SACh. 29 - Prob. 9SACh. 29 - Prob. 10SA
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- _____relay messages from the brain and spinal cord to muscles and glands. a. Motor neurons c. Interneurons b. Sensory neurons d. Neurogliaarrow_forwardThe ____ cannot be controlled by conscious thought. a. motor neurons b. somatic nervous system c. autonomic nervous system d. skeletal musclesarrow_forwardA bacterial toxin is known to block the release of ACh at the motor end plate of skeletal muscle. Consequently, a. the skeletal muscle contracts with increasing force. b. the skeletal muscle contracts with increasing frequency. c. the ability to stimulate the muscle is impaired. d. other neurotransmitters would stimulate the muscle.arrow_forward
- The _____________ nerve innervates the anterior thigh muscles and the skin on the anterior thigh. a. femoral c. sciatic b. obturator d. tibialarrow_forwardMuscle fatigue is caused by ________. a. buildup of ATP and lactic acid levels b. exhaustion of energy reserves and buildup of lactic acid levels c. buildup of ATP and pyruvic acid levels d. exhaustion of energy reserves and buildup of pyruvic acid levelsarrow_forwardMuscle tone is: a. the result of voluntary shortening of the muscle. b. the result of a small amount of involuntary activation of motor units by the nervous system. c. abnormal—a person’s muscles should be relaxed normally. d. present only where there is damage to the nervous system.arrow_forward
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