Exam 1 Flashcards
cannot feel lower leg muscles but can move them. lower legs do not respond to stretch reflex testing and therfore walking is compromised.
dorsal spinal root, lumbar/sacral
cannot move or feel quadriceps. muscles do not respond to stretch reflex testing. can move and feel hamstrings.
peripheral nerve in quadriceps
cannot feel anything from the hands, but can move them fine, sign their name well and hands rspond to reflexes.
sensory humoculi at hand.
uncoordinated in every motor test given. can move all muscles, but movements are shaky and inaccurate.
cerebellum
arms and fingers work well, no upper extremity problems. can stand still, but can’t control hamstrings or toes very well when trying to walk. brain scan normal.
lateral cortical spinal tract.
their heart rate is too slow and cant speed up
sympathetic innervation of the heart
person can notice that sounds and smells are changing, but can’t indentify the musci or smells. cant understand instructions. sound and smell reflexes are intact. eyes work, but can’t identify people in pictures.
parietal lobe-processing
can’t plan tasks. reflexes work fine. can perform very simple tasks but no complex movements. does not perform well when given instructions to perform a movement.
prefrontal cortex.
the subject died
brain stem
can feel the entire body accurately. cannot moves toes or bladder and they dont respond to reflex testing.
lumbar spinal, ventral root
cannot move or feel anything below the waist. lower body and pelvic reflexes work correctly. brain scan in normal.
white mater, thoracic level
how does rubbing your arm after you bump into the wall make it hurt less?
it activates the large nerve fibers which inhibits pain, which then reduces small fiber pain input.
what is the primary difference between the somatic and autonomic nervous systems?
the somatic nervous system has sensory and motor pathways while the autonomic only has motor pathways. the autonomic is involuntary movements while the somatic is voluntary. automic then has the parasympathetic and sympatheic nervous systems. autonomic has pre and post ganglionic neurons that connect to the central nervous system.
what are the primary sympathetic and parasympathetic neurotransmitters?
parasympathetic: acetylcholine
sympathetic: norepinephrine
what is the most important specific neuroanatomical structure involved in motor control?
motor neuron
what are the four tpes of information that all sensory systems convey?
locaation, timing, intensity, modality
explain the concept of temporal summation
converts many rapid weak pulses into one large signal. increase frequency of firing-> strength of the signal related to firing frequency.
identify the 2 types of photoreceptors and compare their four most important characteristics.
rods: light sensitive, not in fova, slower, fine tunes corrections in vision.
cones: color sensitive, in fova, faster, three tyrpes-red, blue, green
sternocleidomastoid
neck flexion
a muscle that crosses on the medial side of the hip joint
adduction of the leg
external oblique muscles
flexion of vertebral column. rotation and lateral bending of the trunk.
a muscle that crosses on the posterior side of the elbow joint
elbow extension
an antagonist to the gastrocnemius
dorsiflexes the foot
gluteus maximus
hip extension
extensor carpi radialis
extends wrist and abducts hand
fibularis muscles
eversion and plantar flexion of the foot
frontalis
raises eyebrows, wrinkles forehead
obiculoris oculi
closes eye, squinting, blinking
obiculoris oris
closes mouth, protrudes lips
zygomaticus
smiling
masseter
closes jaw