Quiz 1: Strength and Conditioning

______________ joints allow considerable movement (example: knees).

A. Fibrous

B. Synovial

C. Sutures

D. Cartilaginous

B. Synovial

A motor unit includes:

A. an entire muscle and it's included muscle fibers

B. a motor neuron and a single sarcomere

C. multiple motor neurons and the muscles fibers they innervate

D. a motor neuron and all of the muscle fibers it innervates

D. a motor neuron and all of the muscle fibers it innervates

The following characteristics are true regarding Type IIa muscle fibers except for:

A. feature both anaerobic and aerobic metabolism

B. fast-twitch

C. feature anaerobic metabolism only

D. somewhat fatigue resistant

C. feature anaerobic metabolism only

The __________ is a structure that primarily handles calcium within a myofibril.

A. Sarcoplasmic Reticulum

B. Myosin

C. Mitochondrion

D. T-Tubule

A. Sarcoplasmic Reticulum

The All-or-None Principle explains that:

A. All of the muscle fibers in a motor unit contract and develop force at the same time if the electrical threshold is met

B. All of the motor units in a muscle contract and develop force at the same time if the electrical threshold is met

C. Muscle fibers within a motor unit contract at random

D. All of the muscles attaching at a joint contract and develop force at the same time if the electrical threshold is met

A. All of the muscle fibers in a motor unit contract and develop force at the same time if the electrical threshold is met

An athlete who has a goal to increase force production should incorporate phases of training that use heavier loads and quick/explosive movements in order to optimize neural recruitment.

A. True

B. False

A. True

An individual with a high percentage of Type IIx fibers would suggest potential success in a triathlon.

A. True

B. False

B. False

Bradycardia is suggestive of an individual being aerobically trained.

A. True

B. False

A. True