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