Chapter 3: Central Nervous System Exam 2 Flashcards
What does the central nervous system include?
The brain and spinal cord
The bundle of axons in the central nervous system is called?
Tract
The group of cell bodies in the central nervous system is called?
nucleus
How does the central nervous system develop?
First develops as a hollow tube and then becomes the forebrain, midbrain, and hindbrain
What does the central nervous system include?
brain, forebrain, midbrain, hindbrain, and spinal cord
What does the forebrain include?
The 2 brain hemispheres, thalamus, and hypothalumus
What are the ridges of the brain called?
gyrus
What are the grooves of the brain called?
sulcus or fissure
The outer matter of the cortex is called?
gray matter
The inside matter of the cortex is called?
white matter
What is the gray matter comprised of?
neuronal cell bodies
What is the white matter comprised of?
myelinated axons
What does the frontal lobe include?
precentral gyrus for motor/voluntary movement, Broca’s area for speech, and prefrontal cortex
What is the function of the frontal lobe?
Behavior, judgment/impulses , personality, and movement
What happens if the frontal lobe is damaged?
Lack of concentration/planning, impulsive behavior, and personality changes. Think about Phineas Gage
What did lobotomies do? What part was damaged?
Damage to the prefrontal cortex, specifically the connections between the frontal lobe and thalamus. Lobotomies caused individuals to have little to no interest, lack in concentration, and lacked emotional responses.
Where is the frontal lobe located?
Front of the head
What does the central sulcus separate?
Parietal Lobe and Frontal Lobe
What does the parietal lobe include?
The postcentral gyrus/somatosensory cortex(same thing) and association cortex
What is the function of the parietal lobe?
Responsible for body movement/position, locating objects in space, and identifying objects by touch