Intro to MBB and the Nervous System

Question 1

Neuropil

Answer 1

Area where axons and dendrites synapse

Question 2

Longitudinal plane

Answer 2

Any plane perpendicular to transverse (horizontal) plane

Coronal and saggital are examples

Question 3

Functions of frontal lobe

Answer 3

• Planning behavior
• Language production (broca’s area)
• Higher order cognition

Question 4

Functions of temporal lobe

Answer 4

• Recognition of stimuli
• Audition
• Visual processing
• Learning and memory
• Language comprehension (Wernicke’s area)

Question 5

Functions of parietal lobe

Answer 5

• Spatial orientations
• Language comprehension (part of Wernicke’s area)

Question 6

3 components of basal ganglia and general function

Answer 6

Caudate nucleus, putamen, globus pallidus

Groups of neurons that regular complex motor movements

Question 7

Corpus callosum

Answer 7

Largest commisure connecting the two cerebral hemispheres and largest white matter structure of the brain

Question 8

Anterior commissure

Answer 8

Commissure connecting the two cerebral hemispheres (mostly temporal lobe) across the midline

Question 9

Internal capsule

Answer 9

White matter separating the caudate nucleus and thalamus from the globus pallidus and putamen

Major route connecting cerebral cortex adn brainstem/spinal cord

Question 10

Diencephalon

Answer 10

Composed of thalamus and hypothalamus

Thalamus: relays sensory and motor signals to cerebral cortex (regulation of sleep, consciousness, and alertness)

Hypothalamus: links nervous system to endocrine system via pituitary gland (homeostatis and reproductive functions)

Question 11

Pyramidal decussation

Answer 11

Area where the majority of fibers od the corticospinal tract (motor pathway) cross over to control movement of the opposite side of the body

Occurs at foramen magnum at the caudal end of the medulla

Question 12

Rostral reticular region (brainstem) in upper pons and midbrain

Answer 12

Regular consciousness through modulation of thalamic activity

Lesions here can cause lethargy and coma

Question 13

Location of lateral ventricles

Answer 13

One in each of the cerebral hemispheres

“First and second ventricles”

Question 14

Location of the third ventricle

Answer 14

Found within the diencephalon (thalamas + hypothalamus)

Question 15

Location of fourth ventricle

Answer 15

Surrounded by the pons, medulla, and cerebellum