Chapter 1 Flashcards
Scientific Method
Over Hills Expertly Asking Cats Observations Hypothesis Experiment Analysis of Data Conclusions
levels of organization
subatomic particles atoms molecules macromolecules organelle cell tissue organ organ system organism
homeostasis
body’s ability to keep its internal conditions stable
10 characteristics of life
movement responsiveness growth reproduction respiration digestion absorption circulation assimilation excretion
body cavities
cranial cavity
vertebral canal
thoracic cavity
abdominopelvic cavity
serous membranes
line walls of thoracic/ abdominopelvic cavities, fold back to cover organs
serous membranes: parietal layer
covers wall of cavity
serous membranes: visceral layer
covers organ
integumentary system
covers body
skin, hair, accessory organs, sweat glands
protect underlying tissues, regulate body temperature
skeletal system
located throughout body
bone, ligaments, cartilage
protect, create blood cells,
muscular system
cover body
muscles
expands contract to power movement
nervous system
cranial cavity, vertebral canal
brain, spine, nerves, sense organs
sends impulses (action potential)
endocrine system
abdominopelvic cavity, pelvic cavity
all glands, ovaries, testes
secrete hormones, chemical messengers
cardiovascular
heart, arteries, capillaries, veins
pump forcing blood through blood vessels
lymphatic system
lymph nodes, spleen, thymus,
transport waste, protect from infection, remove pathogens
digestive system
stomach, intestines, throat, esophagus
break down food, produce hormones
respiratory system
lungs, pharynx, larynx, trachea
moves air in and out of body`
urinary system
kidneys, bladder, urethra
remove waste, maintain water / electrolyte balance
