Chapter 3 Flashcards
Tract
bundle of axons
Nucleus (Nuclei or Bed Nuclei)
group if cell bodies
Brain develops from a hallow tube…
-upper tube develops
-forebrain
-midbrain
-hindbrain
-lower tube develops spinal cord
Forebrain
-contains cerebral hemispheres, the thalamus, and the hypothalamus
-largest part of the brain
Cortex
Wrinkled outer layer
Gyrus
ridge
Sulcus (Fissure if large)
groove or space between two gyri
Cortex = _____ = _____
Cortex = grey matter = cell bodies
White matter = ____
White matter = axons
Does brain size affect intelligence?
No, but 2 features characterize intelligent creature.
-cortex has more convolutions
-cerebral hemispheres are larger in proportion to other brain areas
Frontal Lobe contains…
-prefrontal cortex
-Broca’s area
-motor cortex
Prefrontal Cortex
involved in planning, impulse control, decision making, and behavior adjustment
Broca’s Area
important for speech production (mainly on left hemisphere)
Motor Cortex
-responsible for voluntary movement
-pre central gyrus
-homunculus
Homunculus
little man - area follows order of body parts
Contralateral
left brain controls right side, visa versa
What separates the frontal lobe and parietal lobe?
central sulcus
Parietal Lobe contains…
-primary somatosensory cortex
-posterior parietal cortex
Primary Somatosensory Cortex
-processes skins senses, body position, and movement
-post central gyrus
-homunculus
Posterior Parietal Cortex
-combines info from body sense and vision
-identify objects by touch, determine location of limbs, and locate objects in space
Temporal lobe contains…
-Auditory Cortex
-Wernickle’s Area
-Inferior temporal cortex
Auditory Cortex
frequency map that processes auditory info from the ears
Wernickle’s Area
involved in language comprehension
Inferior Temporal Lobe
-concerned with visual identification of objects
-inferior temporal gyrus
Occipital Lobe contains …
-Primary Vision Cortex
-secondary vision cortex
Primary vision cortex (V1)
-maps visual space
-earliest cortical region to process visual info
-sensitive to most basic elements of the visual space
Secondary Visual Cortex (V2-V5)
-process specific elements of vision
-color, form, and movement
