Questions & Answers(GRADED A+)
Homeostasis - ANSWER-A tendency to maintain a balanced or constant internal
environment while the external environment is constantly changing
negative feedback - ANSWER-a negative feedback loop brings you closer to the target
set point. (as you age, this decreases) (ex: temperature regulation)
positive feedback - ANSWER-a positive feedback loop amplifies and moves you away
from that target set point (this increases as you age) (ex: contractions during birth)
anatomy - ANSWER-the study of the structure of body parts
physiology - ANSWER-the study of the function of body parts, what they do and how
they do it
gross anatomy - ANSWER-the study of structures that can be seen with the naked eye
microscopic anatomy - ANSWER-the study of structures too small to be seen by the
naked eye
chemical level - ANSWER-atoms combine to form molecules
cellular level - ANSWER-molecules combine to form cells
tissue level - ANSWER-groups of cells working together to perform a specific function
(tissues can be composed of multiple cell types. For example, blood has red blood cells
and white blood cells)
Organ level - ANSWER-a group of tissues working together to perform a specific
function (organs are composed of multiple tissues)
, organ system - ANSWER-group of organs that work together to perform a specific
function
organism - ANSWER-A living thing; all the systems working together to maintain life
skeletal system - ANSWER-supports and protects the body (femur, bones, joints)
cardiovascular system - ANSWER-move blood throughout the body (heart, blood
vessels)
nervous system - ANSWER-control center of the body (brain, neurons, spinal cord)
Integumentary system - ANSWER-maintenance of boundaries (skin, hair, fingernails)
Endocrine system - ANSWER-regulation- like hormone regulation (pituitary gland,
ovaries/testes)
respiratory system - ANSWER-transport and exchange gases (lungs, pharynx, mouth,
nose)
digestive system - ANSWER-Breaks down food into absorbable units that enter the
blood for distribution to body cells. (stomach, intestine, mouth)
lymphatic system - ANSWER-defends the body against disease/infection (spleen,
appendix)
reproductive system - ANSWER-reproduction (uterus, testes, ovaries)
urinary system - ANSWER-remove nitrogen containing wastes (kidney, bladder,
urethra)