exam 4 Flashcards
Posterior Funicalus
Impulses for light touch, pressure, proprioception
Lateral Spinothalamic
Impulses for pain and temp up the spinal cord
Tectospinal tract
Carries impulses down the spinal cord that are generated in the corpora quadrigemina
Anterior Spinothalamic
Carriers impulses for crude touch and pressure going up thalamus
Corticospinal trat
Carries impulses generated by the primary motor cortex coming down the spinal cord
Spinocebbular tract
Carries impulses generated y cerebellum doing down the spinal cord
Reticulospinal tract
Carries impulses generated by the reticular formation going down the spinal cord
Vestibulospinal tract
generatd by inner ear going down the spinal cord
Spinocerebellar tract
generatd for propioception up to an area of hindbrain
Sensory found in the ?
doral horn
Motor found in the?
Ventral horn
Nerves: each process is surrounded by a loose connective tissue covering called the
Endoneurium
Each process is grouped together as a
Fascicle and is surrounded by another layer of CT known as the perineurium
Each nerve is surrounded by a final layer of CT known as the
Epineurium
Sensory moved towards
CNS
Motor moves
away from the CNS to muscles and glands
Mixed nerves contain both
Sensory and motor
Cranial nerves consists
12 pair of nerves that emerge from nuclei located in the brain stem
Except for three pair of sensiry nerves (optic, olfactory, vestibulocochlear).
Excpet for nerves 10 (vagus) , 11 (accessory)
Supply special snese (sight, hearing, taste, smell)
Olfactory Nerve (I)
Function: smell
Type: Sensory
Optic nerve (II)
Function: vision
Type: Sensory
Oculomotor Nerve (III)
Function: Eye movement , pupil construction
Type: motor
Trochlear Nerve (IV)
Function: Eye movement
Type: motor
Trigeminal nerve (V)
Function: Facial sensation, chewing
Type: Both sensory and motor
Abducens Nerve (6)
Function: eye movement
Type: Motor
Facial Nerve (7)
Function: Facial expression, taste
Type: Both sensory and motor
Vestibulocochlear Nerve (8)
Function: Hearing, balance
Type: Sensory
Glossopharyngeal Nerve (9)
Function: taste, swollowing, salivation, sinus receptors
Type: Both sensory and motor
Vagus Nerve (10)
Function: Autonomic control of the heart, lungs, and digestive tract
Type: Both sensory and motor.
Accessory Nerve (11)
Function: shoulder and neck movement
Type: Motor
In the sympathetic divison cell bodies of preganglionic neurons are all found in what two regions?
T1-L2 : Thoracic and Lumbar
Cell bodies of all these preganglionic neurons are found in which horn of gray
Lateral horns of gray matter
All axons of these preganglionic neruons exit the spinal cord in the ventral root; enter a spinal nerve and thn exit which branch of the spinal nerve?
white ramus
Preganglions always release
Ach
Postganglionic release
norepinephrine
Gray matter carries
synapses
White matter carries
axons