30.1 Organization of the Human Body - Homeostasis - Feedback Inhibition
Organization of the Human body Cells (smallest) Tissues Organs Organ system (largest)
Cells The basic unit of structure of the human body. Tend to be specialized in multi-cellular organisms.
Tissues A Tissue is a group of cells that are working together.
Organs Organs: a group of tissues that work together to perform a single function or a group of functions.
Organ Systems Organ Systems: A group of organs that perform closely related functions.
Tissues Epithelial Connective Nervous Muscle
Epithelial Tissue Lines the inside and outside surfaces of different organs. Function(fxn): Protection, absorption, and excretion Example: Skin, stomach lining.
Connective Tissue Provides support for the body and its parts Bind epithelial tissue to structures, support, and transport. Examples: collagen,
Nervous Tissue Receives and transmits nerve impulses (signals) Example: Brain, spinal column, and nerves.
Muscle Tissue Voluntary and Involuntary movements Skeletal, cardiac, and smooth muscles.
Name the organ without all types of tissue.
Organ Systems that work Together
Homeostasis Homeostasis: The relatively constant internal physical and chemical conditions that organisms maintain despite changes in their environment
Examples of Homeostasis Blood pressure Body Temperature Blood pH
Feedback Inhibition The way the body maintains homeostasis. The body produces a response to oppose the original stimulus Heater Example: the heater shuts off after the temp reaches a certain level.