what are the two main divisions of the nervous system?
100
Iris
What is the colored circular muscle that surrounds the central opening called?
100
melanin
What is a black-brown pigment called?
100
pericardium
What is the outer wall of the heart surrounded by a sac called?
200
periosteum
What is a tough membrane that covers the surface of the bones?
200
sensory, connecting, and motor
what are three types of nerve tissue in neurons?
200
cornea
what is a transplant extension of the sclera that lies in front of the pupil?
200
albino
What is a person whose skin has little or no pigment called?
200
endocardium
What lines the interior surface of the heart?
300
skull
What is the bony structure of the head?
300
sympathetic and parasympathetic
What are two main divisions of the autonomic system?
300
iritis
what is an inflammation of the iris?
300
alopecia
What is a loss of hair, usually occurring in the scalp called?
300
diastole
What is the relaxation phase called?
400
cranium
What is a fusion of eight cranial bones, with the vital function of protecting the brain from injury?
400
meninges
the brain is protected and supported by which surrounding membrane?
400
olfactory
what is the organ responsible for the sense of smell?
400
sweat glands, oil glands, hair, and nails
What are the skins four appendages?
400
systole
What is the contraction phase called?
500
humerus, radius, and ulna
What are the long bones of the upper extremity?
500
cerebrum
the brain in divided into five parts, which is the largest?
500
conjunctivitis
What is the medical condition called for pinkeye?
500
epidermis, dermis, and subcutaneous
What are the skin's three layers?
500
circulatory system
What is composed of four parts:
a pump, the heart
the plumbing, the blood vessels
the circulating fluid, the blood
an auxiliary fluid system, lymphatic system