-
Give an example of skeletal muscle pump importance to venus return
pg 17 of Study guide
Decreased venus return to heart, low cardiac output, less blood to brain, pass out
-
Give an example of how breathing effect venus return
- Valsalva maneuver; forced expiration on closed glottis-
- puts a lot of pressure in thoracic cavity nad it closes the great veins off so there is no venus return to heart and no cardiac output to brain
-
Plasma osmolaility
Increase dehydration causes it to____
Increase salt ingestion causes to ____
Plasma osmolality/osmolarity measures the body's electrolyte-water balance
-
Draw the negative feedback control of blood volume and blood osmolaility
- Dehydration and salt ingestion---> increase osmolaility
- detected by the osmorepector in hypothalamus
- 1. It'll create the sensation of thirst, drink more water, decrease osmolaility, increase blood volume
- 2. It'll send info to post. pituitary to secrete ADH, which increase water retention from kidney, decrease osmolaility, increase blood volume
-
Factors that influence arterial blood pressure
- Heart actions
- 1. Stroke volume
- 2. Cardiac output
- Resting conditions
|
|
