HUMAN ANATOMY PKG >CUSTOM<
8th Edition
ISBN: 9781323572528
Author: Marieb
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 12, Problem 5RQ
An example of an effector is (a) the eye, (b) a gland, (c) a sensory neuron, (d)
a motor neuron.
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The Na+/K+ pump is important for ________ in neurons.
A) the depolarizing phase of the action potential
B) the repolarizing phase of the action potential
C) establishing myelination
D) establishing the resting potential
E) generating ATP
The opening of potassium (K+) channels on dendrites of a postsynaptic neuron will have what effect?
A) Depolarization
B) EPSP
C) Hyperpolarization
D) IPSP
E) Both A and B are correct
F) Both C and D are correct
When a neuron receives signals from other neurons, the signals arrive at the axon hillock in the form of ________.
A) graded potential changes
B) action potentials
C) calcium ions
D) ATP
E) RNA
Chapter 12 Solutions
HUMAN ANATOMY PKG >CUSTOM<
Ch. 12 - In which direction are afferent signals carried?...Ch. 12 - What subdivision of the nervous system regulates...Ch. 12 - What type of sensation is (a) pain from a pulled...Ch. 12 - Which type of neuron process receives stimuli?Ch. 12 - Describe how the electrical impulse from one...Ch. 12 - What is the structural type of most sensory...Ch. 12 - Which structural type of neuron is most abundant?...Ch. 12 - Which neuroglia make myelin in the CNS? In the...Ch. 12 - Which neuroglia are common in regions where...Ch. 12 - Do Schwann cells cover nonmyelinated axons in the...
Ch. 12 - Name the connective tissue wrapping that encloses...Ch. 12 - Where do synaspes occur in the CNS, in white...Ch. 12 - Why is white matter white?Ch. 12 - If there is no interneuron in a reflex arc, as in...Ch. 12 - If you touch a hot stove, you reflexively...Ch. 12 - What type of neuronal circuit contains multiple...Ch. 12 - Both peripheral nerves and the white matter of the...Ch. 12 - From your understanding of the functions of myelin...Ch. 12 - What type of neurons form from neuroblasts in the...Ch. 12 - How does the development of sensory neurons...Ch. 12 - Which of the following structures is not part of...Ch. 12 - Match the names of the cells in column B with the...Ch. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - An example of an effector is (a) the eye, (b) a...Ch. 12 - Prob. 6RQCh. 12 - A ganglion is a collection of (a) neuron cell...Ch. 12 - A synapse between a terminal bouton and a neuron...Ch. 12 - Myelin is most like which of the following cell...Ch. 12 - Prob. 10RQCh. 12 - Afferent neurons of the PNS synapse in the CNS...Ch. 12 - Prob. 12RQCh. 12 - Prob. 13RQCh. 12 - Place the connective tissue coverings surrounding...Ch. 12 - Define proprioception.Ch. 12 - Prob. 16RQCh. 12 - Prob. 17RQCh. 12 - Distinguish gray matter from white matter of the...Ch. 12 - What is distinctive about the appearance of a cell...Ch. 12 - Describe the differences between neurons and...Ch. 12 - Distinguish a nerve from a nerve fiber and a...Ch. 12 - Prob. 22RQCh. 12 - Draw a reflex arc in place in the nervous system...Ch. 12 - Prob. 24RQCh. 12 - Why are the cell bodies of sensory neurons located...Ch. 12 - Prob. 26RQCh. 12 - Two anatomists were arguing about a sensory...Ch. 12 - An MRI scan and other diagnostic tests indicated...Ch. 12 - Prob. 3CRCAQCh. 12 - Rochelle developed multiple sclerosis when she was...Ch. 12 - Reflexes can be somatic (as in the knee-jerk...Ch. 12 - Prob. 6CRCAQ
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- 1. If you block calcium channels on an axon, which will not occur? A) exocytosis of neurotransmitter B) repolarization phase of the action potential C) depolarization phase of the action potential D) hyperpolarization phase of the action potential E) graded potentialarrow_forwardWhere are neurotransmitter receptors located?(A) the nuclear membrane(B) the nodes of Ranvier(C) the postsynaptic membrane(D) synaptic vesicle membranesarrow_forwardWhich statement is true regarding the nervous system? a) Damaged myelin on an axon has no effect with its ability to transmit an action potential b) Depolarization is the reduction of the membrane potential; going from negative to a more positive charge c) Neuroglia cells are only responsible for providing immunity to the nervous cells d) Neurons can communicate with other cells without the use of neurotransmittersarrow_forward
- 51) the somatic and autonomic nervous system differ in all of the following except......? a) target organ responses to their neurotransmitter b) their effectors c) regulation of activity by higher brain centers d) their efferent pathways and gangliaarrow_forwardWhen a neuron fires an action potential, closing of the voltage-gated Na+ channels helps to bring an end to _________. A) the depolarizing phase of the action potential B) the repolarizing phase of the action potential C) graded potential changes D) the resting potential E) vesicle fusion at the synapsearrow_forwardRegulation by the nervous system provides, (a) relatively slow but long-lasting responses to stimuli. (b) swift, long-lasting responses to stimuli. (c) swift but brief responses to stimuli. (d) relatively slow, short-lived responses to stimuli.arrow_forward
- a) How does E allow faster transmission of signals? b) What would happen if G has a lack of Calcium? c) Most neurons have the style of junction (chemical) shown in the diagram, rather than gap (electrical) junctions. Why does this make sense?arrow_forward48) which of the following occurs when acetylcholine is released from somatic nervous system? a) sometimes an EPSP, sometimes and IPSP b) skeletal muscle relaxation c) EPSP every time d) IPSP every timearrow_forwardSaltatory conduction is a term applied to the "jumping" movement of action potentials Multiple Choice a) along the postsynaptic membrane from dendrite to axon hillock. b) along myelinated axons. c) from one neuron to another. d) in two directions at the same time. e) across electrical synapses.arrow_forward
- Action potentials move along different axons at different speeds. The slowest speed of conduction will be found in A) large unmyelinated axons B) small unmyelinated axons C) large myelinated axons D) small myelinated axonsarrow_forwardAction potentials and graded potentials both…A) Propagate long distances through neural structures, without attenuation in their amplitude.B) Can directly excite or inhibit neurons.C) Can propagate at speeds of up to 120 meters per second.D) Involve voltage-gated Nav and Kv channels.E) Are capable of triggering synaptic exocytosis in neurons of the vertebrate retinaarrow_forwardThe approximate protein:lipid ratio in the plasma membrane of a myelin cell is: a) 1:10 b) 3:1 c) 1:1 d) 1:4arrow_forward
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