What is the name of fibers that carry information from the skin

25 Jun What is the name of fibers that carry information from the skin

Question
26 of 50

What is the name of fibers that carry information from the skin, joints, and skeletal muscles to the central nervous system?
Somatic sensory
Parasympathetic
Visceral sensory
Motor
Interneurons

Question
27 of 50

Which of these neuroglial cells forms the myelin sheath around the central nervous system nerve fibers?
Oligodendrocytes
Ependymal cells
Schwann cells
Astrocytes
Satellite cells

Question
28 of 50

The Schwann cell forms a myelin sheath around which of the following in the peripheral nervous system?
Dendrites
Cell body
Axon
Nodes of Ranvier
Nucleus

Question
29 of 50

What is the name for the neuron processes that normally receive incoming stimuli?
Neurolemmas
Satellite cells
Dendrites
Schwann cells
Axons

Question
30 of 50

What is the name of the collections of nerve cell bodies inside the CNS?
Tracts
Ganglia
Nerves
Nuclei
Tracts or ganglia

Question
31 of 50

What is the major role of the interneuron?
To form a lipid-protein (lipoprotein) cell membrane on the outside of axons.
To carry information from the central nervous system to muscles and/or the viscera.
To detect the amount of stretch in skeletal muscles or tendons and their joints.
To connect motor and sensory neurons in their pathways.
To transmit nerve impulses from the skin and organs to the central nervous system.

Question
32 of 50

What are the two major functional properties of neurons?
Cover and line body surfaces
Connect and protect
Contraction and movements
Lubricate and secrete
Irritability and conductivity

Question
33 of 50

An action potential is caused by an influx of which of these ions into the cell?
Sodium
Potassium
Calcium
Magnesium
Both potassium and sodium

Question
34 of 50

Which one of the following is the correct sequence of events that shows the sequence of events of a nerve impulse?
The membrane becomes depolarized. Sodium channels open and sodium ions diffuse inward. The membrane becomes repolarized.
Potassium channels open and potassium ions diffuse outward while sodium is actively transported out of the cell.
1, 2, 4, 3
3, 2, 4, 1
2, 1, 4, 3
2, 1, 3, 4
4, 1, 3, 2

Question
35 of 50

What is the name of the gap between two communicating neurons?
Schwann cell
Node of Ranvier
Cell body
Synaptic cleft
Effector

Question
36 of 50

Which of the following describes neurons in which impulse conduction is fastest?
Cerebral
Myelinated
Sensory
Motor
Unmyelinated

Question
37 of 50

Which type of reflex involves skeletal muscles?
Visceral
Parasympathetic
Somatic
Sympathetic
Autonomic

Question
38 of 50

Which of the following is the correct sequence in a typical reflex arc?
Receptor, efferent neuron, integration center, afferent neuron, effector
Receptor, afferent neuron, integration center, efferent neuron, effector
Effector, afferent neuron, integration center, efferent neuron, receptor
Effector, efferent neuron, integration center, afferent neuron, receptor
Receptor, afferent neuron, efferent neuron, integration center, effector

Question
39 of 50

The midbrain, pons, and medulla oblongata are housed in which of the following?
Cerebellum
Pineal gland
Hypothalamus
Brain stem
Diencephalon

Question
40 of 50

Which one of the following represents the correct sequence from outermost to innermost layers of the meninges?
Pia mater, dura mater, arachnoid mater
Dura mater, arachnoid mater, pia mater
Arachnoid mater, dura mater, pia mater
Dura mater, pia mater, arachnoid mater
Pia mater, arachnoid mater, dura mater

Question
41 of 50

The blood-brain barrier is effective against the passage of which of the following?
Water
Metabolic waste such as urea
Nutrients such as glucose
Alcohol
Anesthetics

Question
42 of 50

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
Occipital lobe
Parietal lobe
Pyramidal tract
Temporal lobe

Question
43 of 50

Control of temperature, endocrine activity, metabolism, and thirst are functions associated with which of the following?
Cerebellum
Cerebrum
Hypothalamus
Thalamus
Medulla oblongata

Question
44 of 50

Loss of muscle coordination results from damage to which of the following?
Cerebellum
Cerebrum
Midbrain
Thalamus
Hypothalamus

Question
45 of 50

Which of the following sensations is related to the function of the olfactory nerve?
Chewing
Smell
Vision
Eye movement
Hearing

Question
46 of 50

Which of the following describes the gray matter of the spinal cord?
It surrounds the white matter of the spinal cord.
It contains myelinated fiber tracts.
It surrounds the central canal.
It always carries sensory information to the brain.
It is made up of the dorsal, lateral, and ventral columns.

Question
47 of 50

Which of the nerve plexuses serves the shoulder and arm?
Phrenic
Cervical
Brachial
Sacral
Lumbar

Question
48 of 50

The sympathetic and parasympathetic nervous systems are subdivisions of which of the following?
Somatic nervous system
Voluntary nervous system
Peripheral nervous system
Central nervous system
Autonomic nervous system

Question
49 of 50

Which of the following effects is characteristic of the parasympathetic nervous system?
Stimulates sweat glands to produce perspiration.
Decreases urine output.
Decreases activity of the digestive system.
Decreases heart rate.
Increases metabolic rate.

Question
50 of 50

Which one of the following statements about aging is most accurate?
The brain reaches its maximum weight around the seventh decade of life.
Synaptic connections are too fixed to permit a great deal of learning after the age of 35.
Increased efficiency of the sympathetic nervous system enhances the ability to learn.
Learning throughout the adult and aging years is supported primarily by glial proliferation.
Despite some neuronal losses, an unlimited number of neural pathways are available and read