Anatomy and PhysiologyBy: Gabriela Alvarez

The Human Body

Human body has a head, neck, trunk (thorax, abdomen), two arms and hands and two legs and feet.

Studying the human body involves anatomy and physiology.

Physiology is the study of function in the human body.

Homeostasis, nerves

There 12 systems in the human body

Anatomy is the study of structure in the human body

Location of bones

Composition of body

Composition

The body is composed of:

3% nitrogen

10% hydrogen

18% carbon

65% oxygen

Body contains abut 65% water

Anatomical terms Superior: top

The head is superior to the feet

Inferior: bottom

The feet are inferior to the head

Anterior: front

The eyes are anterior to the back of the head

Posterior: back

The eyes are posterior to the nose

Medial: middle

The heart is medial to the left arm

Lateral: sides

The left arm is lateral to the heart.

Systems of the body Integumentary: skin, hair, nails

Skeletal: bones supporting body and organs

Nervous: collects and process info through nerves and the brain.

Cardiovascular: heart pumping blood

Endocrine: hormones

Muscular: muscle movement

Lymphatic: supplies fluid to blood

Respiratory: delivers oxygen to blood

Urinary: removes waste

Reproductive: sex organs

Digestive: processes food

Immune: fights off diseases.

Homeostasis

Regulates internal environment

Nervous system helps with transmitting info from body to brain

Endocrine system releases hormones to regulate blood pressure and volume

Cell metabolism maintains blood pH.

Maintains a stable temperature and acid balance pH (7)

This is needed so the body can function properly.