A&&P Flashcards
organs are inside of ___ that are inside ___
organs are inside BAGS (sacs) that are inside BOXES (cavities)
cranial cavity
houses that brain
thoracic cavity
houses the heart and lungs
goes from sternem to diaphragm, it also has subdivisions called pleural cavity
LT and RT pleural cavity
houses lungs ; inside thoracic
abdominal cavity
contains digestive system - stomach , liver, spleen .intestines
pelvic cavity
in abdominopelvic cavity contains urinary bladder, reproductive organs and large intestine
sacs are lined w/ _____ that secrete serous fluid
SEROUS MEMBRANES
serous membrane
lubricates the cavity wall organs to reduce friction
pleural membrane
lungs
pericardial membrane
heart
peritoneal membrane
abdominal organs
visceral
part of membrane that touches organ directly
pleurietal
part of membrane that touches cavity wall directly
homeostasis
- bodies maintenance of relatively stable internal environment
- cells die because of internal environment is unstable
- blood supplies us w/ what we need’ resembles homeostasis
stimulus
produces change in variable
afferent signal
sensory ; incoming signal
efferent signal
motor ; outgoing signal ; ok i’ll tell the foot go to effectors
effectors
muscles gland and major organs
negative feedback loop
a process that returns conditions to a set value and turns off the response once the correction is made
- if blood sugar is too high the body tells it to do down
positive feedback loop
response is in the same direction in stimulus example: blood clotting and breast feeding ; the more baby sucks, the more milk comes out
metabolism
obtain release and utilizing energy ; energetic relationship in body
to maintain homeostasis we must use __
ENERGY
