The 11 Organ systems of the body (cont'd)

NERVOUS SYSTEM

Components:

Brain, sensory receptor, spinal cord, nerves.

Function(s):

Fast-acting control system of the body and responds to internal and external changes by activating appropriate muscles and glands.

ENDOCRINE SYSTEM

Components:

Pineal gland,pituitary gland,thyroid gland, thymus,adrenal gland, pancreas,ovary,and testis.

Function(s):

RESPIRATORY SYSTEM:

Components:

Nasal Cavity, pharynx, larynx, trachea, bronchus, lung.

Function(s):

Keeps blood constantly supplied with oxygen and removes carbon dioxide; the gaseous exchanges occur through the walls of the air sacs of the lungs.

Oral cavity,esophagus, liver,stomach,
small intestine,large intestine,rectum,
and anus.

DIGESTIVE SYSTEM:

Glands secrete hormones that regulate processes like growth, reproduction, and nutrient use by body cells(metabolism).

Components:

Function(s):

Breaks down food into absorbable units that enter the blood stream for distribution to body cells and indigestible foodstuffs are eliminated as feces.