Unit 1: Chapter 1: The Study of Body Function Flashcards
Chapter 1
the study of biological functions and how the body works
physiology
the constancy of the internal environment
homeostasis
The three parts of a negative feedback loop
- Receptor
- Integrating Center
- Effector
Acts as sensors to detect change and send information to integrating center
Receptor
Asseses cvhange around a set point and sends instructions to the effector
integrating center
muscles/glands which can make appropriate adjustments to counter change from the set point
Effector
The end product in a process stimulates the process
Postive Feedback Loop
The action amplifies the changes that stimulated the effectors
Positive Feedback Loop
Two examples of positive feedback loops
Child Birth
Blood Clotting
Cells within the same organ communicate with each other to change and signal appropriate responses
Intrinsic Regulation
The brain or other organs regulate an organ using the endocrine or nervous system
Extrinsic Regulation
Basic unit of structure and function of living things
Cell
Group of similar cells that perform a similar function
tissue
group of 2+ tissues in structural and functional units
organ
Group of organs which work together to perform related functions
system
Systems working together in coordination
organism
Tissue’s function is contraction
Muscle TIssue
Three types of Muscle Tissue
- Skeletal
- Cardiac
- Smooth
Muscle is typically found on bones
Skeletal
Function is to contract to move joints and bone
Skeletal Muscle
Appearance: Striated with many nuclei
Skeletal Muscle
TIssue Function: Involuntary Contractions of Heart
Cardiac Muscle
Tissue Location: Heart
Cardiac Muscle
Tissue Appearance: Striated with short and branched fibers, usually 1 or 2 nuclei and intercalated discs
Cardiac Muscle