FINAL June 2013 Flashcards
Compared to unmyelinated axons, myelinated axons:
Conduct impulses faster
Which nerve passes posterior to the medial epicondyle of the humerus?
Ulnar
Which is the “blind spot” of the eye?
the starting point of the optic nerve
Which nerve runs with the hypoglossal nerve?
Geniohyoid
All of the following are mechanoreceptors EXCEPT?
A. follicular receptor
B. thermoreceptor
C. Pacinian corpuscle
D. Meissner’s corpuscle
Thermoreceptor
Which is the fluid in the scala tympani?
Perilymph
What are the structures coming directly out from the spinal cord?
Rootlets
Neurons that conduct nerve impulses form the receptors to the central nervous system are?
Sensory
What dermatome is at the umbilicus?
T10
The end of the paravertebral ganglion is the?
Ganglion impar
Which fibre type responds to stretch (as in the knee tap reflex?)
Alpha
The elongate nerve roots from L2-S2 are called?
cauda equina
What cranial nerve derives presynaptic parasympathetic fibres in abdominal viscera?
vagus
Which muscle is innervated by 2 branches of ansa cervicalis?
Omohyoid
The glossopharyngeal nerve provides parasympathetic innervation to the?
Carotid Gland
Loss of cutaneous sensation and paralysis of muscle on the medial plantar side of the foot indicates damage of which nerve?
Tibial
The sympathetic division of the ANS is also referred to as?
Thoracolumbar division
The greater occipital nerve is derived from the?
Dorsal rams of C2
Which nerve pierces the anterior surface of the psoas major, runs inferiorly, and innervates the genitalia and femoral triangle?
Genitofemoral
The tympanic nerve is a branch from which cranial nerve?
Trigeminal
What type of fibres are in the main facial root (facial root proper)
Motor
What nerve provides the preganglionic GVE innervation to the submandibular ganglion?
Chordae tympani
Which range of spinal cord segments contribute to the cervical plexus?
C1-C4
Crossed effects are associated with which reflex?
Withdrawal
Which fibre transmits signals the slowest?
C
What is the connective tissue laye that encloses a nerve?
endoneurium
“special” functional components get their name because
They are derived from the pharyngeal arches
Which nerve roots form the lumbosacral trunk?
L4, L5
Satellite cells:
A. Myelinate dendrites
B. Line ventricles
C. Line capillaries
D. Surround neuronal cell bodies
Surround neuronal cell bodies
Compensatory eye movement is stimulated by activating the?
Superior Olive
Which of the following is false?
A. The fibres from the lateral half of the retinal cross at the optic chasm
B. The optic nerve exits the orbit through the optic canal
C. The fibres that are in the optic nerve are myelinated
D. The optic nerve is surrounded by the three meninges
A. The fibres from the lateral half of the retinal cross at the optic chasm
Which organelle produces glycoproteins and lysosomes
Golgi Body
Where are the olfactory (receptor) nerves?
Nasal epithelia
The junction between two nerve cells is called?
Synapse
Which supraclavicular branch is also known as the anterior branch?
Medial
What cranial opening does the trochlear nerve pass through?
SOF
A patient comes in, having burned the tip of his tongue. What nerve was stimulated?
Trigeminal
Which nerve carries the motor component of the trigeminal nerve?
Mandibular
What is in the epidural space surrounding the spinal cord?
Fat
The pudendal nerve originates from the anterior division of?
S2-S4
What root(s) contributes to the phrenic nerve
C3-C5
The ciliary body is in the same optic layer as?
The choroid
What cranial opening does the vagus nerve pass through to exit the skull?
Jugular Foramen
The olfactory tract are the axons of which cells?
Mitral
Which nerve branches directly from a root?
Long thoracic
Which roots contribute to the radial nerve?
C5-T1
Which cranial nerve exits caudal to the inferior colliculus?
Trochlear
Which is a vagus nerve ganglion?
nodose
What ganglion does the preganglionic parasympathetic fibres of the oculomotor nerve synapse in?
Ciliary
