Muscular System Quizs

Extensibility

• The ability to stretch beyond the original shape

• The capacity to remain unchanged

• The quality of being rigid and fixed

• The potential to be easily broken

glycol-

• Sugar

• Protein

• Fat

• Vitamin

Anaerobic Respiration

• Occurs with oxygen; produces 36 ATP and carbon dioxide

• Occurs without oxygen; produces 2 ATP and lactic acid

• Occurs in the presence of light; produces glucose and oxygen

• Occurs in the mitochondria; produces 38 ATP and water

Soleus

• Calf muscle beneath gastrocnemius; also plantar flexes foot

• Muscle located in the upper arm; responsible for elbow flexion

• Muscle in the thigh; responsible for knee extension

• Muscle in the abdomen; responsible for trunk rotation

Muscular System Functions

• Produces movement, maintains posture, stabilizes joints, and generates heat

• Regulates blood pressure and heart rate

• Facilitates nutrient absorption in the intestines

• Supports immune function and hormone production

Rectus Abdominis

• Abdominal muscle; flexes trunk

• Muscle that extends the leg

• Muscle that rotates the torso

• Muscle that stabilizes the shoulder

epi-

• Below, beneath

• Above, upon

• Beside, near

• Inside, within

Protraction

• Moving a body part backward (e.g., jaw or shoulders)

• Moving a body part upward (e.g., jaw or shoulders)

• Moving a body part forward (e.g., jaw or shoulders)

• Moving a body part sideways (e.g., jaw or shoulders)

Actin

• Thin filament in the sarcomere

• Thick filament in the sarcomere

• Protein involved in muscle contraction

• Component of the cytoskeleton

Sarcoplasmic Reticulum

• Organelle that stores and transmits calcium in muscle fibers

• Structure responsible for protein synthesis in cells

• Cell membrane surrounding muscle fibers

• Organelle involved in energy production