Actions & Movements
Characteristics
Guess the Muscle from its Function
Guess the muscle from its Location
Picture
Lever Action
Golden Rules of Muscle Activity
Contraction!
100
turning a body part around its own axis
Rotation
100
The ability to undergo neural stimulation
Excitability
100
Extends arm at elbow
What is Triceps brachii
100
Prominent Calf muscle
Gastrocnemius
100
5
Pectoralis major
100
This part of a lever acts as the the pivot point around which the lever arm will move.
Fulcrum
100
Rule 3: Muscles are attached to bone at least 2 points. The more immobile point of attachment is the _________________, and the moveable point of attachment is the _________________.
Origin, insertion
100
This is the term used to refer to the contractile response of a single muscle fiber to a single nerve impulse
Twitch
200
moving a body part toward the midline
Adduction
200
allows the muscle to stretch and rebound back to original shape
elasticity
200
Flexes neck and allows rotation of head
Sternocleidomastoid
200
Side of the head
Temporalis
200
8
Rectus abdominis
200
During flexion of the elbow, which part of the body is the fulcrum?
Elbow joint
200
Rule 4: Muscles can only _________________. They never _________________.
Pull, push
200
This phase of a muscle twitch occurs as a brief delay between the time of stimulation and the time of contraction of the muscle fiber
Latent period
300
increasing the angle between two bones, or straightening a body part
extension
300
Muscle's ability to shorten forcibly.
Contractibility
300
rotation of the waist
External oblique abdominal muscle
300
Upper back extending all the way to the occipital bone
Trapezius
300
9 on posterior view
latissimus dorsi
300
During flexion of the elbow, which part of the body applies the force needed to move the forearm bones?
Biceps brachii muscle
300
A muscle must cross at least this many joints.
ONE
300
A motor neuron and all of the muslce fibers it controls is called this.
Motor unit
400
decreasing the angle between two bones, or bending a body part.
Flexion
400
Ability to lengthen/stretch
Extensibility
400
Let's you wink ;)
Orbicularis occuli
400
Origin on the zygomatic bone!
zygomaticus
400
18
Rectus femoris
400
During flexion of the knee, the tibia and fibula act as what part of the lever system?
Lever arm
rigid bar/arm
400
This is the action a muscle does as it shortens and its insertion is moved towards origin.
Contracts
400
One way to increase the force of a muscle contraction is through this, where a muscle twitch will occur before the previous twitch ends.
Summation
500
moving a body part away from the midline
Abduction
500
The organization and arrangement of these 2 contractile molecules is the overall difference among cardiac, smooth, and skeletal muscle tissues
Actin & Myosin
500
This group extends the leg at the knee
Quadriceps femoris
500
Most medial muscle of the quadriceps group
Vastus medialis
500
4 posterier view
Semitendinosus
500
During flexion of the knee, which part of the body acts as the load of the lever system?
The weight of the lower leg & weight of foot
500
In relation to the joint it crosses, the bulk of a muscle will lie here. (Hint: directional term)
Proximal
500
When multiple motor units are enlisted and used at the same time to increase the force of a contraction it is called this. Usually the motor unit with the largest fibers will be enlisted last in this process.
Recruitment