More Questions Flashcards
Muscle spindles are
A. Nonencapsulated receptors
B. Present in the tendon
C. Proprioceptors
D. Synonymous with motor end plates
C.
Which statement is correct
A. Free nerve endings in the epidermis are the terminal ends of motor fibers
B.Schwann cells are present in the A fibers of sensory neurons
C. Motor neurons are located in the dorsal horn of the spinal cord
B.
The dorsal root ganglion cells mediate
A. Motor signals only
B. Sensory signals only
C. Both motor and sensory signals
B.
The proprioceptive positioning test examines proprioceptive reaching the
A. Cerebrum cortex
B. Cerebellum
A.
A dog shows no spinal cord reflexes of the right limb. However the affected limb shows a normal perception of all sensory modalities. The lesion most likely present in the
A. Right dorsal horn
B. Left lateral funiculus
C. Upper motor neurons
D. Right ventral horn
D.
Lesion involving the left spinomedullary tract causes a loss of proprioceptive positioning of the
A. Right thoracic limb
B. Both right and left thoracic limbs
C. Right pelvic limb
D. Left pelvic limb
D.
Pain sensation and proprioceptive are absent in the right pelvic limbs. The thoracic limbs show normal motor control and sensory perception. A lesion in this animal is most likely present somewhere in the cord segments
A. Cervical region
B. Lumbar region
B.
Which hormone decreases the levels of iCa in the plasma
A. Calcitriol
B. PTH
C. Calcitonin
D. Calcidiol
C.
Pain is dented by?
A. Free nerve endings
B. Pacinian corpuscles
C. Muscle spindle
D. Merkels corpuscles
A.
Sensory fiber that detects the skin signals and send signal to spinothalamic tract is the
A. Aa Fiber
B. C fiber
B
What structure directly projects sensory signals to the cerebral cortex
A. Dorsal root ganglia
B. Thalamus
C. Primary sensory neurons in the dorsal horn of the spinal cord
D. Second-order neurons in the dorsal horn of the spinal cord
B.
The sensory receptor sensitive to touch and pressure is the
A. Pacinian ( or lamellar) corpuscle
B. Golgi tendon organ
C. Muscle spindle
D. Merkel disks
E. A and D
E
The tract that carries signals for pain and temperature sensations is the
A. Spinocerebellar tract
B. Crus cerebru
C. Spinothalamic tract
D. Corticospinal tract
C.
Which statement is correct about the system that mediates pain sensation
A. Pacinian corpuscles are nerve endings for pain sensation
B. Ventral roots carry pain signals to the spinal cord
C. Cell bodies of the primary sensory neurons are located in the dorsal root ganglion
D. Second- order neurons are located in the ventral horn of the spinal cord
C.
