Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
Homeostasis
|
The maintenance of a relatively stable internal environment within narrow limits.
|
|
|
External environment
|
Can vary greatly betweeen temperature, humidity and wind.
|
|
|
Blood glucose
|
Maintained within narrow limits despite our diet.
|
|
|
Temperature
|
Temperature of internal cells is referred to as core body temperature.
|
|
|
Blood pressure
|
Must have adequate blood and pressure to transport nutrients and wastes around the body.
|
|
|
Ions
|
Potassium and sodium are required for nerve transmission.
|
|
|
Urea
|
Urea needs to be removed as it is a waste product.
|
|
|
Sensory division
|
Transmits sensory information about the internal and external environments to the CNS where the information is processed.
|
|
|
Internal environment
|
Is maintained within narrow limits
*Temperature (core) *Blood glucose levels *Water balance |
|
|
CNS
|
Central Nervous System : Brain and spinal cord.
|
|
|
PNS
|
Peripheral Nervous System : all other nerve cells.
|
|
|
Motor division
|
Transmits information away from the CNS to effector organs such as muscles or glands .
|
|
|
Somatic
|
Transmits messages to skeletal muscle (voluntary).
|
|
|
Autonomic
|
Transmits messages to smooth muscle, heart muscle and glands (involuntary).
|
|
|
Sensory division
|
Transmits sensory information about the internal and external environments to the CNS where the information is processed.
|
