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A & P Chapter 7
Nervous System
| Question | Answer |
|---|---|
| Fibers that carry information from the skin, joints, and skeletal muscles to the central nervous system are ________. A) motor | somatic and sensory |
| What is the primary role of the interneuron (association neuron)? | connect motor and sensory neurons in their pathways |
| What statement best describes the resting state of a neuron? | Neurons are polarized with more sodium ions outside the cell and more potassium ions inside the cell. |
| An action potential is caused by an influx of ________ ions into the cell. | sodium |
| The gap between two communicating neurons is termed ________. | synaptic cleft |
| Rod quickly pulled his hand away from the hot stove. What type of reflex is this? | withdrawal reflex |
| The midbrain, pons, and medulla oblongata are housed in the ________. | brain stem |
| What specific part of the midbrain houses reflex centers for vision and hearing? | corpora quadrigemina |
| The hypothalamus is the "emotional-visceral" center of the brain and, thus, is an important part of the ________. | limbic system |
| Cerebrospinal fluid (CSF) circulates through all of the following EXCEPT ________. | corpus callosum |
| Which one of the following represents the correct sequence from outermost to innermost layers of the meninges? | dura mater, arachnoid mater, pia mater |
| Which of the following brain dysfunctions is also known as a stroke? | cerebrovascular accident (CVA) |
| The spinal cord terminates by vertebra ________. | L3 |
| Which one of the following is the correct sequence in connective tissue sheaths, going from the outermost to the innermost layer? | epineurium, perineurium, endoneurium |
| The ventral rami of the spinal nerves form a complex network of nerves known as a ________. | plexus |
| Impulse conduction is faster in neurons that are ________. | myelinated |
| Which nervous system subdivision is a chain of two motor neurons consisting of a preganglionic neuron and a postganglionic neuron? | autonomic |
| The large fiber tract that allows communication between the two cerebral hemispheres is called the ________. | corpus callosum |
| What portion of the diencephalon acts as a relay station for sensory impulses traveling upward to the sensory cortex? | thalamus |
| Which disease is a progressive, degenerative disease of the brain that ultimately results in dementia and is associated with a shortage of acetylcholine? | Alzheimer's disease |
| What is the name of cranial nerve III? | oculomotor |
| What congenital disorder can occur when there is a temporary lack of oxygen during delivery of a baby? | cerebral palsy |
| What division of the autonomic nervous system is often called the "rest-and-digest" division? | parasympathetic |
| What are the two major functional properties of neurons? | irritability and conductivity |
| What best describes bipolar neurons? | Bipolar neurons are found in special sense organs, such as the eye and nose. |
| What statement best describes the resting state of a neuron? | Neurons are polarized with more sodium ions outside the cell and more potassium ions inside the cell. |
| Nerve impulse transmissions occurring along myelinated neurons are called ________. | saltatory conduction |
| Which ion causes neurotransmitter vesicles to fuse with the axon's membrane during the conduction of a nerve impulse from one neuron to the next? | calcium |
| A stroke in the primary motor area has caused Don to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged? | frontal lobe |
| What specific part of the midbrain houses reflex centers for vision and hearing? | corpora quadrigemina |
| Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the ________. | hypothalamus |
| Which one of the following represents the correct sequence from outermost to innermost layers of the meninges? | dura mater, arachnoid mater, pia mater |
Created by:
Cinda