When stronger muscle contraction is needed, ___________ occurs.
recruitment
synergistic reinforcement
summation
isometric contraction
A motor unit is a and all the 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.
isometric
isotonic
concentric
eccentric
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?
Bone shape
How much power required
What type of movement needed
Type of joint action
Type of fiber structure
How far the muscle is from the site of action
Muscle innervation routes
How much myoglobin is there
the muscle the finetuned the movement is.
The of muscle fibers determines the amount of needed. The of muscle fibers determines the degree of needed.
What types of muscles are these?
Muscles usually work in pairs
muscle is the prime mover, or the main mover. muscle is the opposer. muscle helps the agonist muscle by reinforcing the same movements. An example is the for biceps brachii. If the synergist helps the movement, it is called a .
There are two types of fixators. An fixator is one that clamps up at joints to allow movement at the joints. A fixator is the one that helps maintain the body's even if the center of 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?
linearly
circumferentially
Tendons transfer from to bone.
What is correct regarding reflex arc?
AKA myotactic reflex
allows for faster reflex actions
forces you to relax to avoid tearing muscle
signal goes from sensory--> spinal cord--> motor
signal goes from sensory--> cerebrall cortex--> motor
AKA myotonic reflex
allows for consistent reflex actions
There are two types of tendon junctions. The junction is tendon to the . It is made of and (gives stretchiness to the fibers.) The junction is tendon to the ; it has a structure.
Ligaments have linear fashioned muscle fibers at the joint.
How do we describe how much muscle contraction there is?
muscle tone
muscle resisitance
muscle fasciculation
muscle compliance
What is partial contraction?
muscles always slightly contracted even if not in full use
pathology when muscles only contract fractionally instead of totally
the reflex tensing of peripheral muscles in reaction to the fight or flight response
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?
fast twitch
slow twitch
fatigue quickly
fatigue slowly
limited blood supply
extensive blood supply
lots of mitochondria
lots of myoglobin
reduced mitochondria
reduced myoglobin
What is true regarding type 2 muscle fibers?
contract quickly
contract slowly
type 2A is the fastest
type 2B is the fastest
type 2A is twitch oxidative
type 2B is twitch oxidative
type 2A is twitch glycolytic
type 2B is twitch glycolytic
Single twitches most of the time arent noticeable.
Twitch is when the muscle fibers are before they can relax.
When does decerebrate rigidity occur?
after death
upon overexertion and over exhaustion
hereditarary disease
at birth
Motor nerves are usually to the muscle to avoid dammage.
Which of these have a faster speed of the stimulus?
myelinated nerve fibers
unmylinated nerve fibers
smaller diameter of nerve fibers
larger diameter of nerve fibers
What checks for spinal cord functionality?
myotomes
deep tendon reflexes
superficial tendon reflexes
golgi tendon bodies
proprioception
myodermatomes
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