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Flashcards in Midterm - General Deck (15):
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CNS

Brain (cerebrum, Brainstem, cerebellum) and spinal cord
Low to high - spinal cord, Brainstem, cerebral cortex

1

Left hemisphere vs right hemisphere

Left - language dominance
Right - emotions, visual spatial skills, musical skills, attention

2

Decussation

Crossing of incoming and outgoing fibers at midline

Lesions occurring above = contralateral
Lesions occurring below = ipsilateral

3

Sensory vs Motor fibers

Sensory - afferent; pain, fine touch and temperature

Motor - efferent; pathways to various limbs

4

Plasticity

Brains ability to change as a result of experience

5

Gyrus vs Sulcus vs Fissure

Gyrus - crest of a fold
Sulcus - groove or valley
Fissure - deep sulcus

6

PNS

Cranial and spinal nerves
Convey pain, temperature, and touch

7

Autonomic nervous system

Independent system
Controls smooth muscles of organs and glands

8

Corpus callosum

Largest Interhemispheric commissural fiber bundle
Interconnects cerebral hemispheres

9

Retrocochlear mechanism

Transmits signals from hair cells to Brainstem cochlear nuclear complex

10

What is the Thalamic relay center for audition

Medial geniculate body

11

External ear

Pina
EAM
Tympanic membrane
Collects and channels sounds

12

Middle ear

Air filled cavity containing ossicles and Eustachian tube
Regulates sound transmission

13

Inner ear

Audition and equilibrium
Contains the cochlea - sensory organ of corti

14

Organizational principles of the brain

Interconnectivity
Centrality
Hierarchy
Laterality
Functional networking
Topographical representation
Plasticity of the brain
Culturally neutral brain