A & P: Muscle Contraction and Movement

A sarcomere is

• A protein filament or fiber
• The basic contractile unit of muscle contraction
• An organelle
• An organ

Tags

NGSS.HS-LS1-2

Sarcomeres are found on

• Fascicles
• Muscle Fibers
• Myofibrils
• Actin and Myosin Filaments

The part of the sarcomere that A (green) refers to is the?

• Z Line
• M Line
• H Line
• A Line

This is a neurotransmitter used to create a muscle impulse

• Acetylcholine
• Calcium Ions (Ca²⁺)
• Sodium Ions (Na⁺)
• Protein Channels

Muscles are attached to bones by _____.

• Ligaments
• Tendons
• Cartilage
• Axons

Another name for a muscle cell.

• Fiber
• Sacrolemma
• Sacromere
• Fascicle

What is a crossbridge?

• Where myosin binds to actin
• Where the calcium crosses into the cytoplasm
• Where calcium binds with troponin
• None of the answers are correct.

The energy needed to perform a muscle contraction comes directly from

• ATP
• Oxygen
• Glucose
• Calcium

Tags

NGSS.HS-LS1-7

Cellular respiration that occurs without oxygen present is called

• aerobic
• anaerobic
• isotonic
• isometric

Tags

NGSS.HS-LS2-3

Anaerobic respiration results in "oxygen debt" in the form of ________.

• ATP
• lactic acid
• pyruvic acid
• creatine

Tags

NGSS.HS-LS2-3