Chapter 4 Flashcards
1
Q
Positive feedback loop
A
Promotes or intensifies a process
EX labor
2
Q
Negative feedback loop
A
Diminishes intensity of process to return to initial status quo
Ex. sweating to cool body back down
3
Q
Brain
A
Cerebrum: “seat of consciousness”
Divided into left & right hemispheres
Cerebral cortex (gray matter) has 4 lobes
Occipital: visual information
Temporal: auditory signals, language
Parietal: touch, taste, heat, cold, pain, pressure
Frontal: muscular activity, motor control, speech, thought
4
Q
Spinal cord
A
ubular bundle of nerves arising from brain Enclosed & protected by vertebrae Branches into spinal nerves Site of reflex actions Involuntary responses to a stimulus Important in sports
5
Q
Autonomic nervous system
A
Controls physiological functions that are unconscious
EX. Heart rate. blood pressure digestion and breathing
6
Q
Sympathetic nervous system
A
Fight or flight
7
Q
Parasympathetic
A
Rest and digest
