Homework Answers
Answer
Option B) Motor unit
- A motor neuron with all the skeletal muscle fibers it innervates is known as a motor unit.
- It helps in stimulating many muscle fibers at a time to facilitate contraction.
- It order to increase the force of contraction, more motor units are recruited.
- A neuromusclular junction is innervation of an axon terminal to
one single muscle fiber.
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Muscle movement 1 pt Spinal cord Dorsal The image to the right depicts a motor neuron...
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers...
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers neuromuscular junction skeletal muscle fibers spinal cord
Question 47 1 p Where the axon of a motor neuron connects with the muscle fibers...
Question 47 1 p Where the axon of a motor neuron connects with the muscle fibers neuromuscular junction sarcolemma dendrite sarcomere
Know about the somatic motor neuron. Where in the spinal cord is the cell body? How...
Know about the somatic motor neuron. Where in the spinal cord is the cell body? How many neurons are in the pathway from the spinal cord to the effector organ? What is the effector organ? What neurotransmitter is released there?
Pls help 56 to 60. thanks al cord structures to the correct statement/description 51. Inferior end of spinal cord. 5...
Pls help 56 to 60. thanks
al cord structures to the correct statement/description 51. Inferior end of spinal cord. 52. Spinal nerves that extend inferior to L1-L2. A 53. CTP that attaches to coccyx. 54. CTP shelves that stabilize laterally. C 55. Gives rise to brachial plexus.E K Cauda equina B Filum terminale C. Denticulate ligaments DConus medullaris E. Cervical enlargement Match spinal cord components to the correct statement/description 56. Innervate skin and muscles of the back. 57. Form plexuses...
FILL IN THE BLANK. 1. Type of summation occurring when numerous different pre-synaptic neurons release neurotransmitter...
FILL IN THE BLANK. 1. Type of summation occurring when numerous different pre-synaptic neurons release neurotransmitter simultaneously onto a synapse 2. Occurs due to an increase in membrane permeability to K 3. Receptors that provide the CNS with information about body position 4. Term relating to a conscious recognition of the position of body parts with respect to one another as well as recognition of limb movement rates Large cells filled with myelin which surround the axons of somatic motor...
The brain and spinal cord make up the Select one: O a. Peripheral nervous system O...
The brain and spinal cord make up the Select one: O a. Peripheral nervous system O b. Enteric nervous system O c. Autonomic nervous system O d. Central nervous system Which type of neuroglial cells help to produce and circulate cerebrospinal fluid? Select one: O a. Microglia O b. Ependymal cells O c. Oligodendrocytes O d. Astrocytes Question 70 Not yet answered Points out of 1 P Flag question During the the process of depolarization, Select one: O a. Potassium...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and...
True or False: The striations in skeletal muscle are formed by the arrangement of thick and thin filaments. 2. True or False: In skeletal muscle cells, the sarcoplasmic reticulum is continuous with the sarcolemma. 3. The interval between two Z lines is called a ________________. 4. At a neuromuscular junction, the space between the plasma membrane of the synaptic terminal and the motor end plate is the __________________. 5. An action potential (electric impulse) is transferred from a...
all 3? Which statement about muscle contractions is false? O An action potential in the muscle...
all 3?
Which statement about muscle contractions is false? O An action potential in the muscle cell activates contraction by releasing Car within the muscle. O A single action potential at the neuromuscular junction is sufficient to cause a muscle to twitch. O Summation of twitches leads to a graded increase in the tension that can be generated by a single muscle fiber. The tension generated by a muscle can be varied by controlling how many of its motor units...
KEY TERMS March the numbered form with the definition that is it be definition the responding...
KEY TERMS March the numbered form with the definition that is it be definition the responding sumber in front of the appropriate 40. excitatory postsynaptic potential 21. resting potential 22 on leakage channels 23. equilibrium potential -24 graded potential 25. gated ion channels 26. depolarization 27. hyperpolarization Sensory neurons 2. central nervous system 3. motor neurons 4. intercurons 5. peripheral nervous system 6. somatic motor neurons *7. autonomic motor neurons 8. sympathetic 9. parasympathetic 10. cell body all dendrites 12....
1. What channels or carriers are NOT found at the axon to the axon terminal? Select...
1. What channels or carriers are NOT found at the axon to the axon terminal? Select one: a. Na+ leaky channels b. Cl- gated channels c. Na+ gated channels d. Na+-K+ ATPase e. None of the above 2. What is TRUE about action potential in the neuron? There may be more than one answer. Select one or more: a. At resting membrane potential (-70mV), the inactivation gate of the Na+ channel is closed while the activation gate is opened. b....
Correctly label the following parts of a motor unit. neuromuscular junction spinal cord skeletal muscle fibers neuromuscular junction skeletal muscle fibers spinal cord
Question 47 1 p Where the axon of a motor neuron connects with the muscle fibers neuromuscular junction sarcolemma dendrite sarcomere
Pls help 56 to 60. thanks
al cord structures to the correct statement/description 51. Inferior end of spinal cord. 52. Spinal nerves that extend inferior to L1-L2. A 53. CTP that attaches to coccyx. 54. CTP shelves that stabilize laterally. C 55. Gives rise to brachial plexus.E K Cauda equina B Filum terminale C. Denticulate ligaments DConus medullaris E. Cervical enlargement Match spinal cord components to the correct statement/description 56. Innervate skin and muscles of the back. 57. Form plexuses...
FILL IN THE BLANK. 1. Type of summation occurring when numerous different pre-synaptic neurons release neurotransmitter simultaneously onto a synapse 2. Occurs due to an increase in membrane permeability to K 3. Receptors that provide the CNS with information about body position 4. Term relating to a conscious recognition of the position of body parts with respect to one another as well as recognition of limb movement rates Large cells filled with myelin which surround the axons of somatic motor...
The brain and spinal cord make up the Select one: O a. Peripheral nervous system O b. Enteric nervous system O c. Autonomic nervous system O d. Central nervous system Which type of neuroglial cells help to produce and circulate cerebrospinal fluid? Select one: O a. Microglia O b. Ependymal cells O c. Oligodendrocytes O d. Astrocytes Question 70 Not yet answered Points out of 1 P Flag question During the the process of depolarization, Select one: O a. Potassium...
all 3?
Which statement about muscle contractions is false? O An action potential in the muscle cell activates contraction by releasing Car within the muscle. O A single action potential at the neuromuscular junction is sufficient to cause a muscle to twitch. O Summation of twitches leads to a graded increase in the tension that can be generated by a single muscle fiber. The tension generated by a muscle can be varied by controlling how many of its motor units...
KEY TERMS March the numbered form with the definition that is it be definition the responding sumber in front of the appropriate 40. excitatory postsynaptic potential 21. resting potential 22 on leakage channels 23. equilibrium potential -24 graded potential 25. gated ion channels 26. depolarization 27. hyperpolarization Sensory neurons 2. central nervous system 3. motor neurons 4. intercurons 5. peripheral nervous system 6. somatic motor neurons *7. autonomic motor neurons 8. sympathetic 9. parasympathetic 10. cell body all dendrites 12....
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