Review Final

Question 1

List a sport and explain what system and muscle type is involved?

Answer 1

Volleyball: Anerobic

• Short bursts of activity, explosive movements, quick rallies, uses both type 1 and type 2 muscle fibers and mostly fast twitch muscle fibers.

Question 2

What method of body comp is the most accurate?

Answer 2

1. DEXA
2. Hydrostatic Weighing
3. BMI - worst

Question 3

3 way BI is convenient?

Answer 3

Simple, Quick, Inexpensive

Question 4

3 negatives of BI?

Answer 4

Underestimate fat mass, overestimate fat-free mass

Question 5

Explain how the nervous and endocrine system work?

Answer 5

• Hypothalamus
• Distress signal
• Sympathetic nervous system
• Adrenal glands
• Epinephrine (adrenaline)
• Blood stream
• Heart rate increases
• Blood to muscles
• Blood sugar released from fats
• ACH is released and it sends the message to the muscles triggering voluntary movement

(Explain muscle movement)
ACH allows action potential to travel across sarcoplasm, down t-tubules, depolarization, into SR where calcium is released, calcium binds to troponin, revealing actin- myosin binding site, cross bridge, power stroke, contraction, repeat or homeostasis.