Quiz 2 Flashcards
Level of organization
Cell=>tissue=>organ=>organ system=>organism
What is the difference between anatomy and physiology
Anatomy)the way something looks
Physiology)the way something works
Characteristics of life
Movement;Respond;Grow;Reproduce; Digest;Absorb;Excrete;Circulation
What is metabolism
Chemical reactions that support life
Requirements to live
Water;Food;Pressure;Heat;Oxygen
What is homeostasis
Stable internal environment
What is a receptor, control center, and effector?
Receptor:provides information
Control center:decision maker
Effector:muscle or gland causes necessary change
Stimulus is change…
1) Receptors detect change and give info to control center
2) Control center makes decisions
3) effectors(muscle or gland)do a job
4) response(change is corrected)
Negative feedback
•Most common type of homeostatic mechanism
•Return conditions to normal
•Response is in the opposite direction of stimulus
•Ex)body temperature,blood pressure,and blood glucose
Stimulus=> <= Response
Positive feedback
•Uncommon in body •change is intensified •effector is increased initially •produce unstable condition •Ex)blood clots, uterine contractions Stimulus=> Response=>
2main body portions
Axial portion & Appendicular Portion
Axial Portion:
Head,Neck,& Trunk(chest area)
Appendicular portion:
Upper and lower limbs
Major cavities of Axial portion
1) Cranial:houses the brain
2) Spinal cavity:contains spinal cord
3) Thoracic cavity:houses lungs & thoracic viscera(organs)
4) abdominopelvic cavity:contains abdominal & pelvic (hip)
* diaphram:seperates thoracic and abdominopelvic cavities
Abdominopelvic
- abdominal cavity:diaphram to top of pelvis & has stomach, liver, kidneys, small & large intestine
- pelvic cavity:enclosed by pelvic bones & has large intestine,bladder, & internal reproductive organs
