Unit 1 Flashcards
What are the 12 organ systems?
Cardiovascular, digestive, endocrine, integumentary, immune, lymphatic, muscular, nervous, reproductive, respiratory, skeletal, urinary
Cardiovascular Roles
- Transports oxygen, CO2 hormones, nutrients & water
- Regulates body temp.
Cardiovascular Components
Heart, blood vessels (arteries veins, capillaries)
Digestive Roles
- Breaks down food, absorbs nutrients, stores energy
Digestive Components
mouth, esophagus, stomach, liver, small and large intestines, pancreas, anus, and gallbladder
Endocrine Roles
- Glands that produce hormones, growth and development, tissue function, reproduction, sleep & mood
Endocrine Components
pituitary gland, thyroid gland, parathyroid gland, adrenal gland, pancreas, ovaries, testicles
Immune Roles
- Defends body against pathogens
Immune Components
lymph nodes, spleen, bone marrow, lymphocytes, thymus, white blood cells (leukocytes), tonsils and adenoids, appendix
Integumentary Roles
- barrier, retains fluid, protects
- regulates body temp
3.eliminates waste (through sweat)
Integumentary Components
skin (largest organ), hair, nails
Lymphatic Roles
- helps defend the body, makes & moves lymph
Lymphatic Components
lymph nodes, lymph ducts, lymph vessels
Muscular Roles
- supports movement, maintains posture
2.help circulate blood
3.generate heat
Muscular Components
appx. 650 named muscles
Nervous Roles
- controls voluntary and involuntary actions
2.sends signals between brain and body
Nervous Components
brain, spinal cord, nerves, nervous tissue
Reproductive Roles
- human reproduction
Reproductive Components
Male: testicles, vas deferens, penis, epididymis, prostate
Female: clitoris, labia minor, labia majora, vagina, uterus, cervix, fallopian tubes, ovaries
Respiratory Roles
transports oxygen and CO2
Respiratory Components
lungs, trachea, larynx, pharynx, sinus, mouth, nose
Skeletal Roles
- provides support, movement, protection
- blood cell production
- calcium storage
Skeletal Components
206 bones, tendons, ligaments, cartilage
Urinary Roles
produces, stores, eliminates urine
Urinary Components
kidneys, ureter, bladder, sphincter, urethra
Homeostasis
characteristic of a system that regulates its internal environment to keep conditions stable
Autoregulation
tissue, cell or organ that automatically adjusts WITHOUT involvement of nervous system
Extrinsic regulation
nervous or endocrine system control/adjusting
Positive Feedback
amplify stimuli, leads to cascade effect
Negative Feedback
counteract stimuli
