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40 Cards in this Set

  • Front
  • Back
The part of the central nervous system situated within the skull.
area of the brain responsible for voluntary activities of the body.
Corpus Callosum
A thick band of nerve fibers that connects the two hemispheres of the brain.
Cerebral Cortex
outer layer of the cerebrum, center of thinking and complex behavior
region of the brain that coordinates body movements
brain stem
connects the brain to spinal cord (medulla oblongata and the pons)
gets messages from the sense organs and relays the info to the cerebrum for processing
recognition of hunger thirst, fatigue, anger and body temerature
a mass of nerve tissue
refelx arc
the neural path of a reflex
somatic nervous system
Division of the PNS that conducts signals from sensory receptors to the CNS and signals from the CNS to skeletal muscles.
autonomic nervous system
The portion of the nervous system that regulates involuntary body functions, including those of the heart and intestine. Controls blood flow, digestion and temperature regulation.
sympathetic nervous system
mobilizes energy during times of stress
parasympathetic nervous system
the part of the autonomic nervous system that is stimulated during times of relaxation
Senses are the physiological methods of perception
A sensory receptor that responds to heat and cold.
A specialized sensory end organ that responds to mechanical stimuli such as tension, pressure, or displacement.
responds to chemical stimuli- smell or taste
a nerve ending, cell, or group of cells specialized to sense or receive light.
An organ of vision
The round pigmented contractile membrane of the eye that is perforated in the center by the pupil
Circulatory system is composed of
consists of the heart, a series of bloodvessels and the blood that flows through them
circulatory system
circulates blood and lymph through the body
The membranous sac filled with serous fluid that encloses the heart and the roots of the aorta and other large blood vessels.
muscular tissue of the heart
internal wall between the segments of an anelid's body
systematic circulation
pathway in which left side fo the heart pumps blood to all the body except the lungs
a flap of connective tissue between an atrium and a ventricle, or in a vein, that prevents backflow of blood
A single complete pulsation of the heart.
small group of cardiac muscle cells in the right atrium that set the pace for the heart as a whole
atrioventricular node
Conducting tissue at the bottom of the right atrium in which electrical impulses must pass to reach the ventricles.
blood vessels
aorta, arteries, capillaries, veins
blood pressure
The force of the blood against the walls of the artery.
systolic pressure
the pressure of blood inside arteries when the heart contracts.
diastolic pressure
the pressure of blood inside arteries when the heart is at rest
high blood pressure
the force of blood pushing against blood vessel walls
heart attack
damage to the heart muscle due to insufficient blood supply
rupture of a blood vessel leads to oxygen lack in the brain
pumps blood through the blood vessels