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chapter 1 vocab
Term | Definition |
---|---|
anatomy | science of body structures |
physiology | science of body functions |
dissection | careful cutting apart of the body structures |
anatomical position | standard position of reference where you stand, face observer, palms turned forward |
prone | body lying facedown |
supine | body lying faceup |
trunk | comprised of chest, abdomen, and pelvis areas |
superior | toward the head |
inferior | away from the head |
anterior | at the front of the body (ventral) |
posterior | at the back of the body (dorsal) |
medial | nearer to midline |
lateral | farther from midline |
proximal | nearer to the trunk of the body |
distal | farther from trunk of body |
superficial | on surface of body |
deep | away from the surface of body |
planes | imaginary flat surfaces that are used to divide the body |
sagittal plane | divides left and right |
coronal/frontal plane | divides anterior and posterior |
transverse plane | divides top and bottom; superior and inferior |
oblique plane | cut at an angle |
cell | basic structural and functional unit of an organism |
tissue | group of cells work together to perform a function |
organ | structures composed of 2 or more types of tissue |
organ system | related organs with a common function |
metabolism | sum of all chemical processes |
responsiveness | detect and react to internal or external signals |
movement | motion of single cells to whole body |
growth | increase in body size |
differentiation | development from unspecialized cell to specialized cell |
reproduction | new cells or new individual |
homeostasis | maintenance of stable condition in body's internal environment |
feedback system | cycle of events where a body condition is monitored, evaluated, changed continuously |
controlled condition | monitored factor or variable of the body |
stimulus | disruption that changes controlled condition |
receptor | body structure monitors changes in the controlled condition - gives input |
control center | sets range of a controlled condition - gives output |
effector | body structure receives output from control center and produces a response |