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Lesions, Trauma, Etc
BIO 203 Exam 2 Study
18
Anatomy
Undergraduate 4
11/04/2009

Additional Anatomy Flashcards

 


 

Cards

Term

Corticospinal Tract Lesions

 

Negative signs?

Positive signs?

Definition

Negative Signs:  

  1. loss of ability to make fine movement of digits and distal limb muscles, 
  2. slowness and weakness of voluntary movements

Positive Sign: Babinski Reflex

Term
Babinski Reflex
Definition

toes flex up and out in response to sole of foot being stroked, as opposed to normal response of toes flexing downward

Term
Dorsal Root Ganglion Lesion
Definition
loss of sensation (because dorsal root picks up signals)
Term
Ventral Root Lesion
Definition
loss of ability move body parts (because ventral root sends out signals)
Term

Precentral Gyrus

 

What is it?

Lesion?

Definition

Primary Motor area

 

Lesion: paralysis of contralateral side of body

 

 

Term

Postcentral Gyrus

 

What is it?

Lesion?

Definition

Somatosensory area

 

Lesion: loss of fine localization of stimuli, loss of ability to judge weights, shapes, and textures

Term
Supplementary Motor Area
Definition
performance of a sequence of movements from memory
Term

Posterior Occipital Cortex

 

What is it?

Lesion?

Definition

Primary Visual Cortex

 

Lesion: scotomas (holes in visual fields)

Term

Broca's Area

 

What is it?

Lesion?

Definition

Motor Speech area

 

Lesion: cannot talk properly

Term

Wernicke's Area

 

What is it responsible for?

Lesion?

Definition

language reception and comprehension

 

Lesion:  cannot understand speech

Term
Cranial Nerve I
Definition
olfactory
Term
Cranial Nerve II
Definition
Optic
Term
Cranial Nerve VIII
Definition

Vestibulochocochlear

 

Vestibular = Balance

Cochlear = Hearing

Term
Arcuate Fasciculus
Definition
tract of fibers connecting Broca's and Wernike's areas
Term
Dorsal Column Tracts
Definition

  • ascending tract:  ascends in GRACILE FASCICLE and CUNEATE FASCICLE
  • Synapses first in medula
  • Forms synapses with the thalamus
  • fine touch, vibration, pressure, limb movement and positional information

Term
Spinothalmic Tracts
Definition
crude touch, pain, and temperature
Term
Hippocampus
Definition
Memory formation and short-term memory
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