Childhood Muscles physio

When stronger muscle contraction is needed, ___________ occurs.

A motor unit is a [blank_start]neuron[blank_end] and all the [blank_start]myotubes[blank_end] it stimulates.

Bigger motor units are for more precise movements.

What type of muscle contraction is when the muscle, without either shortening or lengthening, maintains the contraction.

Which muscle contraction shortens as time progresses?

What type of muscle contraction is when the muscle actively lengthens during contraction

What type of muscle contraction begins shortening as the tension increases?

What influences muscle shape?

[blank_start]Longer[blank_end] the muscle the [blank_start]more[blank_end] finetuned the movement is.

The [blank_start]number[blank_end] of muscle fibers determines the amount of [blank_start]power[blank_end] needed. The [blank_start]length[blank_end] of muscle fibers determines the degree of [blank_start]contraction[blank_end] needed.

What types of muscles are these?

Muscles usually work in pairs

[blank_start]Agonist[blank_end] muscle is the prime mover, or the main mover. [blank_start]Antagonist[blank_end] muscle is the opposer. [blank_start]Synergist[blank_end] muscle helps the agonist muscle by reinforcing the same movements. An example is the [blank_start]brachioradialis[blank_end] for biceps brachii. If the synergist helps [blank_start]stabilize[blank_end] the movement, it is called a [blank_start]fixator[blank_end].

There are two types of fixators. An [blank_start]essential[blank_end] fixator is one that clamps up at [blank_start]proximal[blank_end] joints to allow movement at the [blank_start]distal[blank_end] joints. A [blank_start]postural[blank_end] fixator is the one that helps maintain the body's [blank_start]posture[blank_end] even if the center of [blank_start]gravity[blank_end] changes due to position.

Skeletal muscle, which moves bones, makes up the majority of our musclular body mass.

How does the tendon travel toward the bone?

Tendons transfer [blank_start]force[blank_end] from [blank_start]muscle[blank_end] to bone.

What is correct regarding reflex arc?

There are two types of tendon junctions. The [blank_start]enthesis[blank_end] junction is tendon to the [blank_start]bone[blank_end]. It is made of [blank_start]collagen[blank_end] and [blank_start]elastin[blank_end] (gives stretchiness to the fibers.) The [blank_start]myotendinous[blank_end] junction is tendon to the [blank_start]muscle[blank_end]; it has a [blank_start]crimped[blank_end] structure.

Ligaments have linear fashioned muscle fibers at the joint.

How do we describe how much muscle contraction there is?

What is partial contraction?

An example of partial contraction is the latissimus dorsi, as it helps maintain body posture and hold up upright.

What is true regarding type 1 muscle fibers?

What is true regarding type 2 muscle fibers?

Single twitches most of the time arent noticeable.

Twitch [blank_start]summation[blank_end] is when the muscle fibers are [blank_start]restimulated[blank_end] before they can relax.

When does decerebrate rigidity occur?

Motor nerves are usually [blank_start]deep[blank_end] to the muscle to avoid dammage.

Which of these have a faster speed of the stimulus?

What checks for spinal cord functionality?