EBK HUMAN BIOLOGY
11th Edition
ISBN: 9780100545939
Author: MCMILLAN
Publisher: YUZU
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Textbook Question
Chapter 14, Problem 5CT
In a rock climber like the man pictured in Figure 14.25, which organs of equilibrium are activated?
Figure 14.25 Dangling upside down affects several organs of equilibrium. What are they?
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How would the electrical pattern on the EMG change if the somatic motor neurons supplying the forearms were unable to send signals properly? How would this affect the muscles?
Relative to muscles of the back, we have more dexterity and precision in the control of our fingers. This is explained by:
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B) The smaller ratio of muscle fibers controlled by neurons in the fingers
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D) The smaller threshold potential of finger muscles
Muscle spindles are the sensory receptors that monitor the length of skeletal muscles. When the length of the hamstrings changes between standing and seated positions, which structure is responsible for adjusting the length of the intrafusal muscle fibers of the muscle spindle?
Group of answer choices
beta motor neurons
gamma motor neurons
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alpha motor neurons
Chapter 14 Solutions
EBK HUMAN BIOLOGY
Ch. 14 - When a receptor cell detects a specific kind of...Ch. 14 - Name six categories of sensory receptors and the...Ch. 14 - How do somatic sensations differ from special...Ch. 14 - Explain where free nerve endings are located in...Ch. 14 - Prob. 5RQCh. 14 - What are the stimuli for taste receptors?Ch. 14 - How do smell signals arise and reach the brain?Ch. 14 - Label the parts of the ear:Ch. 14 - In the ear, sound waves cause the tympanic...Ch. 14 - Label the parts of the eye:
Ch. 14 - How does the eye focus the light rays of an image?...Ch. 14 - A __________is a specific form of energy that can...Ch. 14 - Awareness of a stimulus is called a ________.Ch. 14 - ____________ is understanding what particular...Ch. 14 - A sensory system is composed of __________. a....Ch. 14 - ___________detect energy associated with changes...Ch. 14 - Detecting substances present in the body fluids...Ch. 14 - Which of the special senses is based on the...Ch. 14 - Rods differ from cones in the following ways: a....Ch. 14 - The outer layer of the eye includes...Ch. 14 - The inner layer of the eye includes the...Ch. 14 - Your visual field is ______________. a. a...Ch. 14 - Match each of the following terms with the...Ch. 14 - Prob. 1CTCh. 14 - Prob. 2CTCh. 14 - Jill is diagnosed with sensorineural deafness, a...Ch. 14 - Larry goes to the doctor complaining that he cant...Ch. 14 - In a rock climber like the man pictured in Figure...
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- Several of the events that occur between the time a physician strikes apatient’s patellar tendon with a rubber hammer and the time the quadriceps femoris contracts (knee-jerk reflex) are listed below:(1) increased frequency of action potentials in sensory neurons(2) stretch of the muscle spindles(3) increased frequency of action potentials in the alpha motor neurons(4) stretch of the quadriceps femoris(5) contraction of the quadriceps femorisWhich of the following most closely describes the sequence ofevents as they normally occur?a. 4,1,2,3,5 c. 1,4,3,2,5 e. 4,2,3,1,5b. 4,1,3,2,5 d. 4,2,1,3,5arrow_forward3. 5 2 7 9. A gymnast is able to maintain a steady posture while on a balance beam. In order to maintain balance, the gymnast would need to see the balance beam and determine where her feet are touching it. She would need to control the muscle contractions in her body to ensure she doesn't fall off the beam. The regions of the brain numbered above that are involved directly in maintaining balance are ,and Record your answer in descending order.arrow_forwardDescribe the role of the following in planning and executing movement: spinal cord - brain stem - thalamus - cerebellum - basal ganglia (basal nuclei) - cerebral cortex -arrow_forward
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- ~1-stimulus, 2-depolarization, 3-repolarization, 4-hyperpolarization ~1-threshold, 2-depolarization, 3-hyperpolarization, 4-repolarization ~1-threshold, 2-repolarization, 3-depolarization, 4-hyperpolarization ~none of the answers are correctarrow_forwardWhen you wave your right hand, what part of your brain initiates the action?arrow_forwardWhich type of proprioreceptor is sensitive to changes in both muscle length and the speed of muscle contraction? Question 8 options: golgi tendon organs muscle spindles pacinian corpuscle end organs of Ruffiniarrow_forward
- Put the following events in chronological order. (Some of the steps may be missing.)1) Ca*+ floods into the pre-synaptic neuron.2) ch (Acetylcholine) binds to ACh receptors in the sarcolemma.3) Na+ floods into the post-synaptic muscle cell.4) The A.P arrives at the pre-synaptic terminal causing Ca+ channels to open.5) Ach from the synaptic vesicles spills into the pre-synaptic cleft.6) A post-synaptic action potential results in the muscle fiber (depolarizationarrow_forwardThe Libet Experiment found that the start of the Readiness Potential: Occurred after participants reported they had the will to move to move their wrist. Preceded when participants reported they had the will to move ONLY but not before they moved their wrist. Preceded when participants reported they had the will to move AND before they moved their wrist. O Preceded when participants actually moved ONLY but not before reporting the will to move their wrist.arrow_forwardCompared to a large stimulus, how would each variable below change in response to a smaller sensory stimulus? Calcium influx in the sensory cell [ Choose ] Neurotransmitter release [Choose ] Generator potential amplitude [Choose ) Action potential amplitude [Choose)arrow_forward
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