Anatomy and Physiology 1 Exam 1 Questions With Correct Answers

anatomy - Answer study of structure and form; derived from Greek word Anatome which means to cut apart or dissect; Anatomists study structure and form of organims studying the relationships among parts of the body and the structure of individual organs physiology - Answer the study of function of the body parts; physiologists examine how organs and body systems function under normal circumstances as well as how their functions are altered with medication or disease branches of anatomy - Answer microscopic- structures that cannot be observed to the unaided eye (cytology- study of body cells and their internal structure; histology- study of tissues) gross anatomy- structures that can be observed to the unaided eye,; macroscopic (systemic anatomy- anatomy of each body system; regional anatomy- examines all of the structures in a particular region of the body as a complete unit) embryology - Answer discipline concerned with developmental changes occuring from conception to birth comparative A&P - Answer examines similarities and differences of anatomy and physiology of different species pathophysiology - Answer relationship between the functioning of an organ system and disease or injury to that organ system basic qualities of life - Answer organization- each organism has a complex structure and order metabolism- the sum of all chemical reactions to occur within a body; anabolism (smaller molecules form larger) and catabolism (larger molecules are broken down to smaller) growth and development- each organism assimilates materials from its environment and often grows and develops responsiveness- ability to sense and react to stimuli regulation- ability to adjust or direct internal bodily function in the face of environmental changes- homeostasis- ability of an organism to maintain a consistent internal environment organization of the human body - Answer chemical level- consists of atoms, molecules, macromolecules, and organelles cell level- consists of cells, made up of structures and molecules from chemical level tissue level- made up of tissues which are made of cells organ level- made up of organs made up of 2-3 tissue types that work together for specific, complex functions organ system level- organs that work together to coordinate activities and acheive a common function anterior - Answer in front of posterior - Answer in back of dorsal - Answer on the backside of the human body ventral - Answer on the belly side of the human body superior - Answer closer to the head inferior - Answer closer to the feet deep - Answer on the inside superficial - Answer on the outside homeostasis - Answer refers to the ability of an organism to maintain a consistent internal environment or "steady state"; for example if the body gets hot due to external temperature, the body maintains a steady state by circulating more blood toward the surface to facilitate heat loss; nervous system regulating blood pressure when you get out of bed in the morning receptor- detects changes in variable; either substance or process stimulus control center - interprets input from the receptor and initiates change through the effector; parathyroid hormone monitors calcium levels effector- structure that brings about the change to alter the stimulus; muscles in the lungs that bring air flow positive feedback - Answer set point-- what is normal action occurs that reinforces the response; mother breast feeds baby: suckling causes receptors to signal to hypothalamus to release oxytocin causing breast tissue to produce milk negative feedback - Answer detecting a change and then initiating the opposite response to return to the set point (if it's hot, bringing heat to the surface of the skin so the body loses heat, if cold withdrawing blood to vessels, skeletal muscles shiver, no sweat, withdraw foot when stepping on glass) atoms - Answer protons (+1 charge), nuetrons, and electrons (very little weight) atomic number is based on protons amu is based on protons and nuetrons types of chemical bonds - Answer ionic bond- bond that transfers electrons, stronger; form salts covalent bond- bond that shares electrons, weaker, can be single, double, triple; form molecular compounds major elements of the human body - Answer Oxygen (65%), Carbon(18), Hydrogen (10), Nitrogen (3), Calcium, Phosphorous, cation - Answer positively charged ion anion - Answer negatively charged ion electrolyte - Answer substances that both dissolve and dissociate in water that create electric currents organic molecules - Answer molecules that contain carbon lipids - Answer type of organic molecule made up of fatty acids and steroids; water insoluble triglycerides- (H2CO)3 (3 glycerol and fatty acid chains (H2C)n ) phospholipids- phosphate, various organic molecules, glycerol, and fatty acids steroids- like cholesterol, 4 hydrocarbon rings eicosanoids- 20 carbons, arachidonic acid carbohydrate - Answer hydrated carbon--nearly every carbon is attached to a water molecule