Exam 1 Study Guide Flashcards
Which type of contraction is the OPPOSITE of the action of a muscle?
Eccentric
What are the two arrangements of muscle?
Fusiform and pennate
What joints have 3 DOF?
Hip and Shoulder
What is unfused tetanus?
Generates series of summated mechanical twitches with no rest in between firing of action potentials
Where is the center of mass in women?
Below the belly button, closer to the hips
What is a synergist?
A muscle that assists a prime mover
What is the AOR for the sagittal plane?
Medial-lateral
What is a force couple?
Two forces acting in opposite linear directions to rotate a part around an axis producing the same rotary direction
What motions does a hinge joint allow?
Flexion and extension
What happens in a joint when water is increased?
Swelling, which is protection
What are the three tissues surrounding a joint?
Fibrous layer, tendons, ligaments
Why is ground substance important in articular cartilage?
Provides an ideal surface for distribution of constant repetitive forces
Where is the AOR in a 3rd class lever?
End of a bone
What does the epimysium do?
Forms the muscle
What is an example of an agonist?
Biceps in a bicep curl
What is an agonist?
Muscle Responsible for an action
What is an example of a synarthosis joint?
Skull sutures
Explain a Type II muscle fiber
Fast twitch, for short and powerful bursts
What is linear acceleration directly proportional to?
The force causing it and the acceleration acts in the same direction
What is an example of a force couple?
Trapezius and Serratus Anterior during upward rotation of scapula with arm elevation
What does the perimysium do in muscles?
Forms a channel for the blood vessels
What is an example of an antagonist?
Triceps in a bicep curl
What is a saddle joint?
Convex in one direction, concave in the other
What do muscles in parallel allow for?
Hypertrophy and increased contractile force