Body systems understanding the human body.

Nervous System

Principle parts: The CNS (brain and spinal cord), peripheral nervous system ( nerves which originate from the spinal cord).

Primary function: To collect information, interpret it and produce output or action.

Circulatory System

Principle parts: Heart, blood vessels, blood

Primary function: responsible for the flow of blood, nutrients and gases.

Digestive System

Principle parts: Mouth, salivary glands, pharynx, esophagus, stomach, small intestine, large intestine, rectum

Primary function: Breakdown of food and its absorption.

Skeletal System

Principle parts: Bones, cartilage, ligaments

Primary function: To provide support and movement of the body.

Excretory system

Principle parts: Kidneys, liver, large intestine, Ureter, Urethra, urinary bladder

Primary function: To get rid of waste materials of the body.

Endocrine System

Principle parts: Pituitary, hypothalamus, thyroid, adrenals, ovaries, testes, parathyroids

Primary function: Regulate the activities of cells or organs, sexual development, production of various hormones.

the organisms are not adapted to live in some communities or habitats.

the answer is c. altitude. hope this ! #brainiac