Bio 210 lecture exam 1 questions and answers rated A+

Bio 210 lecture exam 1 questions and answers rated A+ Anatomy studies the form and structure of the body. Physiology examines living organisms and their parts of how they function Microscopic anatomy examines structures that cannot be observed by the unaided eye Two main subdivisions of microscopic anatomy cytology and histology cytology study of cells Histology study of tissues Gross anatomy or macroscopic anatomy investigates the structure visible to the aided eye Systematic anatomy each individual body system Regional anatomy all the structures in a particular region of the body Surface anatomy focuses on superficial anatomic markings and internal body structures Comparative anatomy examines similarities and differences in the anatomy of different species Embryology studies developmental changes from conception to birth Pathologic anatomy examines anatomic changes resulting from disease Radiographic anatomy investigates internal structures with visual scanning procedures Physiology examines living organisms and their parts of how they function Cardiovascular physiology the functioning of the heart, blood vessels and blood Neurophysiology functioning of the nerves and nervous system organs Pathophysiology relationship between the function of an organ system and disease of injury of the system Respiratory physiology functioning of respiratory organs Reproductive physiology the functioning of the hormones and reproductive cycle Homeostasis the body's ability to maintain a stable internal environment Receptor component of homeostasis that the structure that detects changes in the stimulus, sensory nerves Stimulus component of homeostasis that changes in a variable that is regulated Control center component of homeostasis that processes the change that occurred from the receptor Negative feedback if it is high, lower it. If it is low, raise it. Negative because the response is opposite of the stimulus Set point variable maintained within a normal level The hypothalamus part of the brain that regulates body temperature Positive feedback moves the stimulus in the same direction, occurs less frequently than negative feedback Simplest levels of organization composed of chemical structures atoms, ions, and molecules Human body is composed of matter solid, liquid, gas that is anything that has mass or takes up space Matter is composed of atoms Atom smallest particle that exhibits the chemical properties of an element Atoms are composed of three subatomic particles protons (+), neutrons, electrons (-) Chemical compounds stable associations between two or more elements combines in a fixed radio Ionic compounds are structures composed of ions held together in a lattice of ionic bonds Ions groups of atoms with a positive or negative charge Positively charged Sodium ion Potassium ion Calcium ion Magnesium ion Hydrogen ion Negatively charged ions Chloride ion Bicarbonate ion Phosphate ion Octet rule outermost shell/orbit is full