Ch.2 Flashcards
___________ the body is unstressed or normal at resting conditons
Homeostasis
_______ _____ is when the body has stable physiological environment.
- Its not normal resting value, just changing
- Used during exercise
Steady-State
Remember Used During Exercise!
_________ _____ _______-Series of interconnected compnents taht maintain a physical or chemical parameter of the body near a constant value.
- Components
- Receptor/sensor
- integrating center-Spinal chord/brain=cns
- effector- Carrys out response
Biological control systems
What is the normal body temp in C°?
37°
_________ Feedback reduces the intensity of the stimulus in an attempt to return to homeostasis.
- Return to homeostasis decresases/removes stimulus, stopping further response of system.
Negitive Feedback
________ Feedback loop is used to promote/intensify a process.
Positive
_____ of a control System
- Degree to whicha control system maintians homeostasis.
- System with a large _____ is more capable of maintaing homeostsis than a systgem with a low gain
- ex. Body temp,Pulmonay System, CV system
Gain
Acute Responses to exercise:
The bodys responces to exercise after a short period of time.
Chronic adaptations to training
Resting HR lowers over time..
Acclimation-
geting used to the environment,such as heat or elevation.
In cell signaling mechanisms:
This is where the hormones are in the blood stream
Endocrine
In cell signaling mechanisms:
chemical messengers released on cells, nearby cells
paracrine
In cell signaling mechanisms:
chemical messengers released on cells, nearby cells
ex. immune cells
Paracrine
In cell signaling mechanisms:
chemical realesed to own cells.
ex. DNA
Autocrine
In cell signaling mechanisms:
it is used in heart cells
Juxtacrine
In cell signaling mechanisms:
This acts within the cell it’s self
intractrine
cells synthesize _____ ______ when homeostasis is disrupted.
Stress Proteins
________ ______ _______ synthesis improves ability of cells to maintain homeostasis.
Exercise induced protein syntheis.
The Process of cellular protein synthesis:
- Exercise activates cell signaling pathways
- Activates transcriptional activator molecule
- Transcriptional activator binds to gene promoter region
- DNA transcribed to mRNA
- mRNA leaves nucleus and binds to ribosome
- mRNA is translated into protein
- Exercise activates cell signaling pathways
- Activates transcriptional activator molecule
- Transcriptional activator binds to gene promoter region
- DNA transcribed to mRNA
- mRNA leaves nucleus and binds to ribosome
- mRNA is translated into protein
