Functions of Human Life
The sum of all anabolic and catabolic reactions that take place in the body
metabolism
Includes the process of differentiation; specialized cells become specialized in structure and function to perform certain tasks; also includes the processes of growth and repair
development
This regulates the flow of materials into and out of a cell to maintain the appropriate environment for normal cellular activities
Plasma membrane
The largest organelle of a cell; acts as a control center for a cell because it contains the genes
Nucleus
body structure that monitors changes in a controlled condition and sends information to the control center
sensor (receptor)
The process whereby smaller, simpler molecules ae combined into large, more complex substances
Anabolism
Formation of new cells for growth, repair, or replacement or the formation of a new organism
reproduction
The three main parts of a cell
plasma membrane, cytoplasm, and nucleus
A cell's shape is related to its _____________________
Function in the body
The three basic components of the feedback system
Receptor, control center, effector
The process by which larger more complex substance are broken down into smaller simpler molecules; releases energy
catabolism
Homeostatic mechanisms of the body are mainly under the control of what two systems?
nervous and endocrine
These cells consist of the smallest and most numerous structural unit that exhibits the basic characteristics of living matter
Cellular
Group of many similar cells that all develop together and perform a certain function
Tissue
The feedback system can be either _____________ or ________________
negative or positive
Causes the responses of sweating and the dilation of blood vessels in the skin in order to decrease body temperature
Responsiveness
Detects changes from the balanced state and sends messages to organs that can counteract the change
The nervous system
The simplest building blocks of matter: subatomic particles, atoms, and molecules
Chemical
4 types of tissue:
Epithelial, connective, muscular, nervous
The highlest level of organization; can independently perform all physiologic functions necessary for life
organismal
When a body tissue is damaged or infected, certain white blood cells move from the blood into the afected tissue to help clean up and repair the area. This is called ___________
movement
corrects changes by secreting molecules called hormones. Ex: the hormone insuline reduces blood glucose level
endocrine system
The six levels o organization o fthe human body rom smallest to largest
Chemical, cellular, tissue, organ, system, organismal
More complext than tissue; a structure composed of two or more tissue types and form a specific physiological function
organ
The sum of all anabolic and catabolic reactions that take place in the body
metabolism