Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 13, Problem 7SQ
Summary Introduction
Introduction: The controlling and communication center of human body are known as brain. The brain receives, evaluates, and processes several inputs and manages the action and initiates the response. There are various voluntary and involuntary activities that occur in the body to maintain the homeostasis. The spinal cord is a column of nerve tissue that arises from the medulla oblongata to the second lumbar vertebra within the vertebral column. There are thirty-one pairs of spinal nerves that emerge from the spinal cord. The spinal nerves are named as per the location of the nerve in the vertebral column.
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The ____ cannot be controlled by conscious thought.
a. motor neurons
b. somatic nervous system
c. autonomic nervous system
d. skeletal muscles
Cell bodies of neurons are most likely found in the:
a. white matter of the brain
b. white matter of the spinal cord
c. subarachnoid space
d. gray matter of the spinal cord
The _____ is a vertical sheet of white matter that bifurcates in its anterior portion and thus divides the gray matter of the thalamus into lateral, medial and anterior portions.
a. Internal medullary lamina
b. Intralaminar nucleus
c. Fornix
d. Reticular nucleus
Chapter 13 Solutions
Human Biology (MindTap Course List)
Ch. 13 - Explain the difference between a sensory neuron,...Ch. 13 - What are the functional zones of a motor neuron?Ch. 13 - Define an action potential.Ch. 13 - What is a synapse? Explain the difference between...Ch. 13 - Explain what happens during synaptic integration.Ch. 13 - Prob. 6RQCh. 13 - Prob. 7RQCh. 13 - The nervous system senses, interprets, and issues...Ch. 13 - A neuron responds to adequate stimulation with...Ch. 13 - When action potentials arrive at a synapse between...
Ch. 13 - In the simplest kind of reflex______, directly...Ch. 13 - The accelerating flow of _______ ions through...Ch. 13 - Prob. 6SQCh. 13 - Prob. 7SQCh. 13 - Cerebrospinal fluid _____. a. fills cavities and...Ch. 13 - Match each region of the central nervous system...Ch. 13 - Prob. 1CTCh. 13 - In newborns and premature babies, the bloodbrain...Ch. 13 - Prob. 3CT
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- The gray matter is composed of the following, except for the __________________________. a. neuron cell bodies b. unmyelinated fibers c. myelinated fibers d. a and b e. a and c Muscle tone is due to ______ activating groups of motor units in response to input from ______ in muscles. a. stretch receptors; spinal reflexes b. spinal receptors; stretch reflexes c. spinal reflexes; stretch receptors d. stretch reflexes; spinal receptors e. none of the abovearrow_forwardThe ________ connects the two cerebral hemispheres. a. limbic system b. corpus callosum c. cerebellum d. pituitaryarrow_forwardWhich of the following is not a part of the periphrial nervous system (PNS)? a.somatic nervous system b.autonomic nervous system c.sensory neurons d. motor neurons e. spinal cordarrow_forward
- Peripheral nervous system (PNS) consists of nerves that lie outside the brain and spinalcord which primarily function is to connect the CNS to the organs.(i) Predict FOUR (4) situations that could be faced by someone who receive thereflection from PNS.arrow_forwardNeurons come in which different type(s)? A. Sensory B. Motor C. Skeletal D. A and Barrow_forwardA patient with poliomyelitis (which characterized by spinal cord damage) has disorder of skeletal muscles function. What neurons were destructed in this disorder? a. Pseudounipolar b. Pseudounipolar and associative (interneurons) c. Associative (interneurons) d. Motor neurons e. Interneurons and motorarrow_forward
- The walls of blood vessels in the brain are formed by cells that are very tightly packed. This arrangement of cells provides which of the following properties of most brain vasculature? a. efficient removal of waste products by blood systems b. rigidity and likelihood of stroke c. most large and charged molecules cannot move from the blood to the brain d. easy access to required blood chemicals such as glucose, oxygen, and various hormones What does it mean to say that acetylcholine exerts ionotropic effects? a. It opens ion channels. b. It increases the concentration of ions within the vesicles. c. It alters the permeability of the presynaptic neuron. d. It changes the electrical charge of sodium ions from positive to negative.arrow_forwardServes as juncture at which nerves cross from one side of the body to opposite side of the brain; involved in cardiorespiratory function, digestion, and swallowing. a. Corpus Callosum b. Cerebral Cortex c. Ventral Region d. Medulla Oblangataarrow_forwardThe ______ regulates heartbeat, breathing, and blood pressure. a. cerebrum b. diencephalon c. cerebellumd. brain stemarrow_forward
- Meningitis is a viral or bacterial infection of the brain. Which cell type is the first to have its function disrupted during meningitis? a. astrocytes b. microglia c. neurons d. satellite gliaarrow_forwardWhich of these locations in the forebrain is the master control center for homeostasis through the autonomic and endocrine systems? a. hypothalamus b. thalamus c. amygdala Chapter 15 | The Autonomic Nervous System 691 d. cerebral cortexarrow_forwardWhich of the following cells line the ventricles of the brain? O A. Oligodendrocytes O B. Ependymal cells O C. Microglia O D. Astrocytesarrow_forward
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