anatomy

Question 1

what is a fascicle?

Answer 1

a portion of the muscle, a bundle of cells surrounded by connective tissue sheath

Question 2

what is a myofibril?

Answer 2

an organelle composed of bundles of myofilamets - composed of sarcomeres end to end

Question 3

what is a sarcomere?

Answer 3

a segment of myofibril - contractile unit composed of myofilaments made of contractile proteins. THIS IS WHAT CONTRACTS AND RELAXES YOUR MUSCLES

Question 4

what is a myofilament?

Answer 4

contractile proteins of actin and myosin

Question 5

is actin thick or thin?

Answer 5

thin

Question 6

is myosin thick or thin?

Answer 6

thick

Question 7

what are the two types of muscle fibers?

Answer 7

type 1 - slow twitch / type 2 fast twitch

Question 8

which type of muscle fibre creates most atp?

Answer 8

slow twitch

Question 9

which type of muscle fibre has a higher ability to resist fatigue?

Answer 9

type 1 / slow twitch

Question 10

which muscle fibre uses aerobic systems to maintain long periods of effort?

Answer 10

slow twitch / type 1

Question 11

which muscle fibre is susceptible for fast fatigue?

Answer 11

fast twitch / type 2

Question 12

which muscle fiber produces energy rapidly?

Answer 12

fast twitch / type 2

Question 13

which muscle fiber type is best for rapid intense movements?

Answer 13

type 2b

Question 14

which muscle fiber type relies mostly on glycogen?

Answer 14

type 2b

Question 15

which muscle fiber contracts quickly with high myoglobin and capillaries?

Answer 15

type 2a

Question 16

what comprises the central nervous system?

Answer 16

brain and spinal cord

Question 17

what makes up the peripheral system of the nervous system?

Answer 17

sensory and motor divisions
connects brain to external environment

Question 18

what are the efferent systems in the nervous system?

Answer 18

somatic and autonomic

Question 19

what are the afferent systems in the nervous system?

Answer 19

sympathetic and parasympathetic

Question 20

what nervous system is designed to keep us alive?

Answer 20

somatic nervous system / SNS
breathing for oxygen
increased hr for blood flor
heightened senses

Question 21

how can you prevent overstimulation of the SNS?

Answer 21

managing stress
eating balanced diet
reducing stimulant intake

Question 22

What is the Peripheral nervous system / PNS?

Answer 22

controls cardiac muscle / smooth muscle / glands
regulates basic body functions

Question 23

how can you train your central nervous system?

Answer 23

specified training + progressive overload

Question 24

what are some reasons progression of neural adaptations can be stunted?

Answer 24

instability
lack of specificity
self limiting beliefs

Question 25

How can the body physically look when hitting CNS fatigue?

Answer 25

Muscle spasms or muscle shaking - the CNS is straining to stimulate motor units to move the weight

Question 26

Define CNS fatigue in lifting

Answer 26

Failure to maintain required force associated with specific alterations in the cns that can’t be explained by dysfunction in muscle itself

Question 27

How is CNS fatigue created?

Answer 27

a disruption in chain of events between the CNS and the muscle fibers

Question 28

Reasons for PNS fatigue?

Answer 28

reduced glycogen
lack of oxygen and metabolite accumulation
alterations in contractile function

Question 29

what are neurotransmitters?

Answer 29

the language of the nervous system

Question 30

what is a neuromodulator?

Answer 30

chemical messenger released by neuron that doesn’t have an excitatory or inhibitory effect, but influences strength of transmission

Question 31

how can you prevent CNS fatigue?

Answer 31

listen to biofeedback
track your overload
compound lifts at start of workouts
start week w lower session