Nervous System Anatomy Flashcards
Cerebellum
Coordinates muscle (motor) activities Maintains balance
Corpus Callosum
Connection between two halves of the brain
Thalamus
Brain’s relay station (from senses to specific part of the brain)
Hypothalamus
Homeostasis of body functions
Hunger, thirst, sex, rage
Pituitary gland
Production site for many hormones
Medulla oblongata
Involuntary control; breathing, heartbeat, blood pressure, peristalsis (digestion)
Pons
Connection between spinal cord and brain
Spinal cord
Contains reflex arc (involving inter neurons)
Protected by a vertebrae
Sensory (afferent) neurons
Receptor
Go from body to central nervous system
Motor (efferent) neurons
Effector
Goes from central nervous system to body
Somatic
Voluntary
Autonomic
Involuntary
Contains sympathetic and parasympathetic
Sympathetic
Autonomic
Pupils dilate, heart rate increases, digestion slows, open lungs, adrenaline, related to fear or stress
Parasympathetic
Autonomic
Pupils contract, heart rate decreases, digestion occurs, lungs constrict, acetylcholine, relaxed state
Cerebrum
Center for voluntary activity
Memory, thinking, reasoning
Two halves
Right = drawing, speech, spatial Left = analytical, math, logical
