Homeostasis, Anatomical Planes, Directional Terms

Negative Feedback loops

mechanisms used by the body to monitor its internal conditions and keep those conditions within a certain range

receptor

structure that sense conditions in the body

integrator

control center within the brain

effectors

structure that carry out specific commands of the control center to reverse condition (negative feedback loop)/amplify condition (positive feedback loop)

positive feedback loops

mechanism by which the body can amplify or increase a physiological change

supine

forearm with palm facing up

prone

forearm with palm facing down

planes create…

sections

sagittal plane

a vertical plane that divides the body into right and left sections.

frontal/coronal plane

vertical plane dividing front and back sections of the body.

transverse plane

horizontal plane dividing upper and lower sections of the body

ventral/anterior

toward the front or belly

dorsal/posterior

toward the back or spine

superior

above

inferior

below

medial

toward the midline of the body

lateral

away from the midline of the body

proximal

closer to the point of attachment

distal

farther from the point of attachment

superficial

near surface

deep

farther from surface