Soc 19: The Short-term Effects Of Excercise

Question 1

Stroke volume

Answer 1

is the amount of blood pumped by the heart during each beat.

Question 2

Cardiac output

Answer 2

is the amount of blood pumped by the heart in one min
= stroke volume x heart rate

Question 3

Heart rate

Answer 3

The number of times your heart beats per minute

Question 4

Short term effects on the muscle

Answer 4

-Muscle fatigue- muscles feel weak, painful and tired
-Cramps- severe sort of muscle fatigue causes muscle to involuntarily contract painfully
-Lactate accumulation as a result of no oxygen available for respiration
All as a result of anaerobic excercise
-Muscle tempersture increases

Question 5

Effects on respiratory system

Answer 5

Respiratory rate, number of breaths per minute increases
Tidal voume the number of air inhaled and exhaled in one breath increases
The rate of gaseous exchange increases

Question 6

Effects on cardiovascular system

Answer 6

-heart rate, the number lf beats per minute increases
-stroke volume, amount of blood pumped out of the left ventricle in one contraction increases
-cardiac output, volume of blood pumped by the heart per minute increases
-vasodilation, blood vessels leasing to woeking kuscles may open to increase blood flow
-vasoconstriction, blood vessles leading to digestive system close to reduce blood flow
-blood vessels near the skin open to allow heat to escape