Unit 1 Flashcards
(162 cards)
Name five special senses.
Taste, olfaction, vision, hearing, and balance
Name four subdivisions of the peripheral nervous system.
Cranial nerves, spinal nerves, ANS, ENS
The nervous system is divided functionally into the ____ and the ____ or ____ and ____.
SNS & ANS or efferent & afferent
Name the structural and functional unit of the nervous system.
Neurons
Which is a correct description of neuroglia?
A. They are less than the neurons in number.
B. They are excitable cells.
C. They support the neurons.
D. They are supported by the neurons.
C. They support the neurons.
In the PNS, neuroglia include: A. Ependymal cells B. Neurolemma cells C. Astrocytes D. Oligodendroglia
B. Neurolemma cells
Schwann cell is also called: A. Satellite cell B. Neuroglia cell C. Neurolemma cell D. Ependymal cell
C. Neurolemma cell
Th cranial ventricles are lined by A. Oligodendroglia cells B. Ependymal cells C. Astrocytes D. Satellite cells
B. Ependymal cells
A collection of nerve cells in the CNS is known as: A. Nucleus B. Plexus C. Ganglion D. Tract
A. Nucleus
The white matter in the CNS includes: A. Cranial nucleus B. Dorsal horn of the spinal cord C. Cranial tract D. Ventral horn of the spinal cord
C. Cranial tract
The meninges include _____, _____, and _____.
Pia mater
Arachnoid mater
Dura mater
Name the layer that provides an effective barrier of nerve fibers.
Perineurium
The endoneurium surrounds the axon and the ______ cell.
Neurolemma
Name the two types of ganglia in function.
Autonomic (visceral motor)
Sensory
Name the structure which carries impulses away from the nerve cell body.
Axon
In the PNS, the sensory nerve fibers are also known as ______.
Afferent fibers
How many cranial nerves arise from the brain?
11
What is the descriptive name of the cranial nerve which arises from the upper cervical spinal cord?
Spinal accessory nerve (CN XI)
Spinal nerves arise from the spinal cord as: A. Anterior and posterior roots B. Anterior and posterior rootlets C. Mixed spinal nerves D. Ventral and dorsal rami
B. Anterior and posterior rootlets
The unilateral area of skin innervated by the fibers of a single spinal nerve is called a _____.
Dermatome
Which of the following is a correct description of proprioceptive sensation?
A. Proprioceptive sensations are usually conscious.
B. Proprioceptive sensation is related to visual input
C. Proprioceptive sensation concerning distension of the stomach
D. Proprioceptive sensation concerns the spatial orientation of the body and limbs.
D. Proprioceptive sensation concerns the spatial orientation of the body and limbs.
Visceral motor fibers transmit impulses to _____, _____, and _____.
Smooth muscle
Cardiac muscle
Glandular tissue
Branchial motor fibers innervate A. Masseter B. Sternohyoid C. Thyrohyoid D. Levator scapula
A. Masseter
Name three functionally different modalities of the nerve fibers which innervate the skeletal muscles.
Somatic efferent
Branchial efferent
Parasympathetic visceral efferent