Muscle Terminology
Attaches a muscle to a bone
Tendon
Bending movement that decreases the angle of the joint is:
Flexion
What is the approximate amount of muscles in the human body?
650-700
List 2 of the 3 types of muscle fibers
Type I- Slow Twitch
Type IIA- Intermediate
Type IIX- Fast Twitch
Muscle end attached to the immovable or less movable bone
Origin
A bundle of muscle fibers
Fascicle
Brings the toes closer to the shin
Dorsiflexion
What is an involuntary muscle contraction that produces heat?
Shivering
Voluntary, attached to bones
Skeletal muscle
Muscle end attached to the more movable bone
Insertion
Another word for cardiac muscle is the ______ .
Myocardium
To move away from the midline of the body
Abduction
What are the three layers of organization of fibers in the muscles? (Connective Tissue)
Epimysium, Perimysium and Endomysium.
This type of muscle is found in hollow, visceral organs (i.e. stomach)
Smooth
____ contractions occur when muscles do not shorten; no movement occurs (ex. holding a plank)
Isometric
The ____ law states that the muscle cell will contract to its fullest extent; it NEVER partially contracts
All-or-none
To move toward the midline of the body
Adduction
The ability to shorten; one of the two characteristics of skeletal muscles discussed in class
Contractility
Each skeletal muscle is made up of hundreds to thousands of skeletal muscle cells, also known as ____.
Skeletal muscle fibers
List one of the primary chewing muscles
Masseter, buccinator, temporalis
List the three types of muscle tissue
Skeletal, smooth, cardiac
Decreases angle between the sole of the foot and back of the leg; ex. standing up on tiptoes
Plantar flexion
The thick and thin protein myofilaments in a myofibril are known as
Actin and myosin
What is a function of cardiac muscle?
Moves substances; ex. heart pumps blood
List 4 functions of muscle tissue
Movement (skeletal muscle), Moving substances (cardiac and smooth muscle), Posture (bipedal motion), Thermoregulation/heat production (homeostasis)