Intro to A & P

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necessary functions for maintaining life:
- maintaining internal balance
- movement
- responsiveness to environment (adaptation)
- digestion
- metabolism
- excretion
- reproduction
- growth
homeostasis can be:
- positive feedback
- negative feedback
positive feedback:
- increases effect
- ex: parturition, blood clotting
negative feedback:
- tries to stop or shut off response
- most common
- pancreas & glucose levels
plasma membrane:

outer layer that provides structure and regulates what goes in and out
cytoplasm:
- fluid inside cell
- keeps integrity of the cell (gives it shape)
Mitochondria:

make cellular energy (ATP)
Nucleus:

control center of cell
Endoplasmic Reticulum:

assists in protein syntheis
Golgi Apparatus:
- packages and transports proteins
- destroys incorrect proteins
dorsal cavity:

brain and spinal cord
ventral body cavity:

contains most of the soft organs (viscera), divided by thin diaphragm
cranial thoracic cavity:

heart, lung, esophagus, blood vessels
caudal abdomniopelvic cavity:
- abdominal cavity (digestive tracts)
- pelvic cavity (urinary and repro organs)