ANIMAL NUTRITION Flashcards
• Circulatory System contains
- Blood
- Some type of pump
- Blood Vessels
CS SUBSTANCES
• Circulatory system is used to transport substances
- O2
- O2 is absorbed from gas exchange surface
* Nutrients absorbed from part of gut ADAPTED FOR ABSORBTION
- CO2
waste is transported from all over body to gas exchange surface
HEARTPUMPS BLOOD
- Heart pumps blood
- Blood to organ↦Arteries
- Organ-Heart↦Veins
- Artery-Veins↦capillaries
- Capillary is small blood vessels
Ways to measure activity of heart
ECG
Pulse Rate
Listening to sounds of heart valves closing
ECG
Control of heartbeat depends upon electrical activity.A lot of heart diseases can cause irregularities in these electricial conductivity and ECG can detect these defects
How u do ECG
tape electrodes on various parts of the body.Electrical conductivity of heart is displayed on a monitior.Compare the resultant trace to the normal trace
Heartbeat
due to the pressure changes in the cradiac cycle the heart valves respond when these valves open and close the sound blood makes lub dub is the sound of the heartbeat
heartbeat contraction
.
relaxation hb
1
Heart and excerscise
Muscle needs more energy to contract during E.SO the heart beats faster and like the arteries supplying muscles swell
changes blood flow result
2
pulse
..
relaative pulse rate
…