Nervous & Energy Systems

Question 1

PNS Compromised of

Answer 1

• 12 cranial nerves
• 31 spinal nerves

Question 2

Efferent

Answer 2

Leads things away

Question 3

Afferent

Answer 3

Bring things towards (senses)

Question 4

ANS Compromised of

Answer 4

• Sympathetic (flight/fight)
• Parasympathetic (calming)

Question 5

Somatic NS

Answer 5

Sends info to CNS, skeletal muscle

Question 6

Reflex Pathway

Answer 6

1. Senses
2. Sensory nerves
3. Intermediate nerve
4. Motor nerve
5. Efferent organ

Question 7

Types of Reflexes

Answer 7

• Stretch
• Postsynaptic
• Proprioceptor system

Question 8

Stretch

Answer 8

Single connection btwn primary afferent & motor neruons

Question 9

Postsynaptic

Answer 9

• Cross-extensor reflex: compensates w/opposing limb
• Withdrawal

Question 10

3 Energy Systems

Answer 10

1. ATP-PC
2. Glycolysis/Fermentation
3. Cellular Respiration

Question 11

ATP-PC Process

Answer 11

• Uses stored ATP & phosphocreatine
• PC + ADP = ATP + creatine

Question 12

ATP PC Characteristics

Answer 12

• Lasts 10 to 15 secs
• No by product

Question 13

Glycolysis lasts

Answer 13

Couple mins, short term

Question 14

Cellular Respiration lasts

Answer 14

Long term

Question 15

Muscles Types

Answer 15

• Type 1
• Type 2A
• Type 2B
• Can changes types

Question 16

Type 1 Muscles

Answer 16

• Slow twitch muscles
• Long term
• Dark red
• Lots of myoglobin

Question 17

Type 2A

Answer 17

• Fast oxidative
• Fast, strong contraction
• Medium long term
• Red colour

Question 18

Type 2B

Answer 18

• Fast glycolytic
• Short, fast contractions that fatigue quick
• Short term
• Pale in colour
• High lvls of myosin ATPase

Question 19

Conductive Zone

Answer 19

Transports air to lunge

Question 20

Respiratory Zone

Answer 20

Gas exchange

Question 21

Purpose of SA node

Answer 21

Pacemaker (R atrium)

Question 22

Purpose of AV node

Answer 22

Pass electrical signal from atria into ventricles

Question 23

Stroke Volume

Answer 23

• Vol of blood ejected by L ventricle per min
• mL/min

Question 24

Cardiac Output

Answer 24

• L/min
• (HR)(SV)

Question 25

VO2 Max

Answer 25

O2 consumption used for metabolic processes

Question 26

a-VO2 Max

Answer 26

Diff in O2 in blood btwn arteries and veins

Question 27

Oxygen States during Exercise

Answer 27

1. O2 Deficit 2. Steady State of O2 delivery: take times for body to adjust 3. EPOC: extra O2 needed to restore systems

Question 28

How does training prolong lactic threshold

Answer 28

- Increases VO2 - Improves ventilation - Heart more effecient

Question 29

Breathing Mechanism

Answer 29

- Inhale: diaphragm contracts, cavity expands - Exhale: diaphragm relaxes, cavity shrinks

Question 30

Ventilation

Answer 30

- Air moved by lungs in 1 min - Tidal Vol: Vol of air for each breathe - Resp Frequency: # of breaths taken per min