Joints
What is the difference between structural and functional joint classification?
Structural: what kinds of material binds bones together
Functional: how much a joint can move
What are muscles made of?
proteins
What are the two main proteins that aide muscle contraction?
Myosin and Actin
Where are the Orbicularis Oculi muscles?
around your eyes
Where is the Trapezius muscle? What does it do?
on the back of the neck, stabilizes and moves the scapula and extends the neck
What is the difference between synarthrosis, amphiarthrosis, and diarthrosis joints?
Synarthrosis: non-moving joints
Amphiarthrosis: partly-moving joints
Diarthrosis: fully-moving joints
What are three functions of the muscular system?
Locomotion
Respiration
Circulation
Digestion
Pressure Regulation
What is the "thick filament" and what is the "thin filament?"
Thick filament: Myosin
Thin filament: Actin
Where is the Buccinator and the Masseter?
Buccinator runs horizontal on the lower cheek
Masseter runs horizontal along the cheek
Where is the Triceps Brachii? What do they do?
on the topside of the arm, connecting to the Humerus. Holds the head of the humerus in its cavity
What are the six synovial joints?
Plane, Hinge, Condylar, Ball and Socket, Saddle, Pivot
What is the difference between Elasticity and Excitability?
Elasticity: muscles ability to return to its original shape and size
Excitability: muscles ability to respond to a stimulus
What is the sarcomere?
the basic unit of a muscle contraction
Where is the Serratus Anterior? What does it do?
from the neck down the back, draws the scapula against the chest wall and assists in respiration
Where is the Rectus Femoris? What does it do?
On the thigh, flexes the thigh
What is the difference between flexion, extension, and hyperextension?
flexion: decreases the angle
extension: increases the angle
hyperextension: over-increases the angle
What is the difference between Extensibility and Flexibility?
Extensibility: muscles ability to stretch
Flexibility: muscles ability to change or be changed according to circumstances
Explain how Actin, Myosin, ATP, ADP, Troponin, Tropomyosin, and Calcium work together to create the Sliding Filament Theory of Muscle Contraction?
Where is your Pectoralis Minor? What does it do?
on the pectoralis region and attaches to the shoulder, rotates the scapula
Where is the Tensor Fasciae Latae? What does it do?
Runs along the outside of the thigh from the hip joint to the knee joint, extends and rotates the leg on the knee joint
What is the difference between abduction, adduction, and circumduction?
abduction: away from the body
adduction: toward the body
circumduction: combination of all movements
Muscles can be striated/non-striated and voluntary/involuntary.
What is skeletal muscle? Cardiac Muscle? Smooth Muscle?
Skeletal: Striated and Voluntary
Cardiac: Striated and Involuntary
Smooth: Non-Striated and Involuntary
In the sarcomere, where is the Z-Disk? A-Band? I-Band? H-Zone?
Z-Disk: at the end of the sarcomere
A-Band: spans from one end of myosin to the other end of myosin
I-Band: from one end of actin in one sarcomere to the other end of actin in another sarcomere
H-Zone: in the middle of the sarcomere where actin and myosin do not overlap
Where are your obliques? What do they do?
on the side of your abdomen, flexes the trunk and assists in respiration
Where is the Vastus Lateralis? What does it do?
On the thigh joint, next to the rectus femoris. extends the knee joint and moves the leg forward.