Module 1 Flashcards
Gross Anatomy
The study of human body systems you can see
Anatomy
The study of the structure and its parts
Physiology
The study of how parts function and work together
Organ
A group of tissues specialized for a particular function
Tissues
Groups of cells forming various building materials of the body
Homeostasis
A state of dynamic equilibrium in the body with respect to its internal environment and functions
Set point
Ideal normal value of a variable around which homeostasis is maintained through a normal range of values that are acceptable to the body
Stress
A factor that causes one or more physiological variables to move away from its homeostatic set point
Control center
The part of the body, either central nervous system or endocrine gland, that receives information about a variable, determines the set point, and signals a response to correct imbalances
Receptor
A structure in the body that monitors the values of your body’s variables
Effector
A structure in the body that can change the value of a variable in response to a signal from the control center
Negative-Feedback System
A control mechanism consisting of receptors, control center, and effectors through which homeostasis in the body is maintained by regulation of the body’s organ systems. It is called negative feedback because the control system opposes or reverses the original stress.
Selective permeability
The ability to let certain materials in or out while restricting others
Endocytosis
The process by which large molecules are taken into the cell
Exocytosis
Transportation of material from inside the cell to outside the cell using vesicles: also called secretion
