Anatomy & Physiology 1 ; Chap 7 - The Muscular System
Anatomy & Physiology 1; Miller-Motte Chattanooga, Tn / Mr. Ford - The Muscular System
Terms in this set (65)
3 Types of Muscle Tissue
Skeletal Muscle, Cardiac Muscle, Smooth Muscle
striated and under voluntary control
non-striated and under involuntary control
striated and under involuntary control
attach muscle to bone
attach bone to bone
Broad, flat, sheet of connective tissue that attaches muscles to a bone or another muscle to soft tissue.
dense Irregular Connective: layers of tough connective membranes that surround muscle fibers, muscle fascicles and the whole muscle
incases muscle fibers in a cell membrane
microscopic fibers, dense irregular connective tissue inside a muscle cell
Connective tissue surrounding a muscle fiber
Bundles of muscle fibers wrapped in perimysium
fibrous connective tissue that surrounds groups of muscle fibers called fascicles
made is fascicles bound together by fascia epimysium
contractile units within myofibrils, the smallest contractile unit of a muscle
Actin and myosin, protein components of the sarcomere.
Troponin and Tropomyosin
Contraction Inhibiting Proteins within each sarcomere that are attached to actin
Function of the Sarcoplasmic Reticulum
stores calcium (Ca+) until stimulated by a nerve fiber. When calcium is released it travels down the T-tubules and removes the inhibitory effect of troponin and tropomyosin thus allowing actin and myosin to interact and cause contraction of the sacromere
the neurotransmitter substance for muscle contraction and is released at neuromuscular junctions diffuses across the synapses and binds to the receptor sites on the sarcolemma.
muscle fibers that are innervated by a single nerve
various force of contraction
sarcomeres within a single muscle fiber contract at the some time, different fibers within a muscle bundle can contract at different times.
produces energy for muscles
3 Sources of ATP
Metabolism of Creatine Phosphate - Anaerobic Metabolism - Aerobic Metabolism
Metabolism of Creatine Phosphate
form of ATP that offers short term replacement system of energy
a type of energy metabolism known as GLYCOLYSIS; does not require oxygen
a type of energy metabolism known as cellular respiration; requires oxygen
stores oxygen in muscle cells
stored form of glucose in muscle cells
the brains ability to know where our muscles are and what they are doing, without our having to consciously look at.
function in pairs
muscle that creates movements / Agonist / Does most of the work.
Allows movement in opposite direction from muscle
where muscle attaches to a more stationary bone
where muscle attaches to the more movable bone.
stabilize body parts and assist prime movers, Helping Muscles
muscles that raises eyebrows, wrinkles forehead
muscles that closes eyelids,used in blinking, winking, and squinting lowers eyebrows
Major & Minor Zygomaticus
muscles that raise corners of mouth - smile
muscles that compresses cheeks inward; whistling or kissing.
muscles that elevates mandible and closes jaw - Powerful
muscles that opens mouth lowers mandible
muscles that protrude the lips - whistling and kissing
Depressor Anguli Oris
muscles that draws angles of mouth downward and laterally when opening mouth; used in frowning
head muscles that bilaterally is primary muscle that causes flexion of the head - unilateral contract to cause rotation of the head to the opposite side.
muscles that are the prime mover for the extension of the head, also elevates the scapula to raise the shoulders
Splenius Capitis and Splenius Cervicis
muscles that bilaterally cause hyperextension of the head, and unilateral rotate the head to the same side.
the large, broad muscle in the chest that flexes and adducts the humerus and rotates the humerus medially
the large, broad muscle in the middle and lower back that extends and adducts the humerus and rotates the humerus medially
a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
Muscles of the rotator cuff
"SITS" - Supraspinatus, Infraspinatus, Teres minor, Subscapularis
Brachialis and Biceps Brachii
the primary muscles that cause flexion or the forearm and elbow
muscles that flex the wrist
muscles that extend the wrist
straight muscles of the abdomen that flexes the trunk
muscle that bilaterally extends the trunk
Internal and External Obliques
Muscles of the ribs, Involved in Exhalation
Gluteus maximus, medius, and minimus, abduct the femur
Adduct the Femur
muscle that Flexes the Femur
a forceful extensor of the femur
muscle which is the primary used for Dorsiflexion of foot at the ankle
Gastrocenemius & Soleus
causes plantar flexion of the foot, Plantar flexion of ankle
prime mover of foot inversion
muscle primarily used for Eversion of the foot