chapter 9: body systems

homeostasis

all body systems are balanced to maintain internail stability

metabolism

physical and chemical processes must be working at a steady level

organs

has a specific function

tissues

tissues are made of groups of cells that perform a similar tasks

cells

building blocks of the body

integument

largest organ, the skin

bones

allow the body to move and protect organs

joint

two bones meet at a joint

muscles

provide movement of the body to maintain posture and heat

atrophy

when muscle wastes away

contracture

muscle or tendon shortens

systole

contracting phase

diastole

resting phase

inspiration

breathing in

expiration

breathing out

peristalsis

involuntary contractions

digestion

preparing food physcially and chemically

absorbtion

transfer of nutrients from theh intestines to the cells