A&P 1 week 1
Ovary organ system
reproductive and endocrine
Gallbladder body cavity
abdominopelvic
Liver body cavity
abdominopelvic
Hierarchy of structural organization of life
1. Chemical (simplest): atoms (elements), molecules and compounds. 2. Cells 3. Tissues 4. Organs 5. Systems 6. Organism (most complex)
Ovary body cavity
Abdominopelvic
Homeostasis description
Ability to maintain stable internal conditions, constantly disrupted from external and internal environment, nervous and endocrine maintain homeostasis through feedback systems: nervous system carries info on sensory and motor nerves, endocrine system carries info in blood.
Organs
Body part made of two or more tissues that performs a specific function. includes heart, lungs, blood vessels, skin, kidneys.
C.H.N.O.P.S.
Carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur.
Tissues
Cells connected together to perform a common function.
Pituitary body cavity
Cranial
Positive feedback mechanisms
Creates self-perpetuating events or "cascades" to strengthen or reinforce original stimulus to speed response. Changes occur in same direction as that of initial change. Ex. Blood clotting and labor contractions.
Liver organ system
Digestive
Parietal serosa
Double layer membrane, lines cavities, allows organ movement.
Visceral serosa
Double layer membrane, lines organs, allows organ movement.
Negative feedback mechanisms
Effects- shuts off or reverses original stimulus. Causes change in opposite direction to that if initial hangs. Maintains physiological functions within narrow range. Most common control system in the body. Ex. Glucose regulation, HR, BP, RR, temp regulation (nervous systems).
Adrenal organ system
Endocrine
4 major tissue types
Epithelial (covers inside and outside), muscle (contracts-shortens to produce movement), nervous (conducts stimulation).
Organism
Group of organ systems acting as a unit. The human body!
Systems
Group of organs that work together to perform a vital function.
Atoms (elements)
Limited unique varieties of matter that make up all substances. Most common elements in the body: CHNOPS Carbon, hydrogen, nitrogen, oxygen, phosphorus, sulfur.
Pericardium membrane
Lines heart cavity, allows organ movement.
Pleura membrane
Lines lung cavity, allows organ movement.
Major body systems
Integumentary, skeletal, muscular, nervous, cardiovascular, lymphatic/immune, respiratory, endocrine, digestive, urinary, reproductive.
Peritoneum membrane
Lines the abdominopelvic cavity, allows organ movement.
Pituitary organ system
Nervous
Adrenal body cavity
Not in cavity
Diaphragm body cavity
Not in cavity
Kidney body cavity
Not in cavity
Pancreas body cavity
Not in cavity (partially abdominopelvic).
Integumentary
Organ: skin Cavity: not in cavity Functions: covers, protects from injury, dehydration, infection. Synthesizes vitamin D. Contains cutaneous receptors, sweat glands and oil glands.
Thyroid body cavity
Pleural
Diaphragm organ system
Respiratory and muscular
Cell
Smallest unit of life. Contains organelles and other structures which are all made of molecules. Organelles perform unique functions for cell making more efficient. Ex. Mitochondria, nucleus.
Cell membranes
Special tissue created when epithelial covers connective tissue. Usually secretory in function. Includes skin, mucous membranes (respiratory, digestive) and serous (cavity linings).
Homeostasis components
Stimulus (change), receptor (detects change), control center (determines response to stimulus), effector (responds to stimulus).
Molecules and compounds
Substance made up of two or more atoms bonded together. Most common molecule in the body is water. Common organic molecules-proteins, carbohydrates, lipids, nucleic acids.
Kidney organ system
Urinary
Gallbladder organ system
digestive
Pancreas organ system
digestive and endocrine
Thyroid organ system
endocrine
