Muscle System Flashcards
consist of myocytes called muscle fiber
Muscle Tissue
used ATP to generate force and produce movement
Muscle Tissue
Types of Muscle Tissue
Cardiac, Smooth, Skeletal
found in the heart wall
Cardiac Muscle Tissue
pumps blood into the arteries
Cardiac Muscle Tissue
involuntary muscle / visceral muscle
Smooth Muscle Tissue
found in walls of hollow internal structures
Smooth Muscle Tissue
move substance/ structure associated with location
Smooth Muscle Tissue
Two Muscle Tissue under subconscious control
Cardiac and Smooth Muscle Tissue
voluntary muscle / striated muscle
Skeletal Muscle Tissue
have striated/striped appearance
Skeletal Muscle Tissue
found attached to bones of skeleton
Skeletal Muscle Tissue
contraction is under CONSCIOUS control
Skeletal Muscle Tissue
Function of Skeletal Muscles
- Producing Body Movement & Locomotion
- Stabilizing Body Position (Posture)
- Protection of Internal Organ (Abs)
- Support of Internal Organ (pelvic)
- Generating heat (shivering)
Changes in Muscle Tissue
Atrophy and Hypertrophy
wasting away of muscles
Atrophy
caused by disuse/severing of nerve supply (dennerving)
Atrophy
increase in the diameter of muscle fibers
Hypertrophy
result from very forceful, repetitive muscular activity
Hypertrophy
decrease in the angle between articulating bones
Flexion
increase in the angle between articulating bones
Extension
continuation of extension beyond the return to anatomical position
Hyperextension
movement of a bone away from the midline
Abduction
movement of a bone towards the midline
Adduction
movement of a distal body part in a circle—while the proximal part remains relatively static
Circumduction
a bone revolves around its own longitudinal axis
Rotation
bending of foot at the ankle in upward direction
DorsiFlexion
bending of the foot at the ankle in downward directy
Plantar Flexion
movement of the forearm so that the palm is turned upward
Supination
movement of the forearm so that the palm is turned downward
Pronation
Cause the action / Prime Mover
Agonist
Oppose the Movement
Antagonist