Muscular System-Quiz 5a: Muscle Overview

section of a myofibril from z disc to z disc; structural and functional unit of muscle

• sarcolemma

• sarcomere

• sarcoplasmic reticulum

• Myofilament

Thick myofilaments

• actin

• troponin

• tropomyosin

• myosin

Thin myofilaments

• actin

• troponin

• tropomyosin

• myosin

The lighter areas are called

• H zones

• M lines

• A bands

• I bands

The darker areas are called

• H zones

• M lines

• A bands

• I bands

tube-network that surrounds myfibrils and stores calcium

• Transverse tubules

• Axons

• Endomysium

• Sacroplasmic reticulum

Cord-like structure that connects muscle to bone

• Ligament

• Articular cartilage

• Fascia

• Tendon

Which of the following correctly lists the structures from largest to smallest

• Myofibril, Myofilament, Muscle Fiber, Fascicle

• Fascicle, Myofibril, Muscle Fiber, Myofilament

• Muscle, Muscle Fiber, Fascicle, Myofibril

• Fascicle, Muscle Fiber, Myofibril, Myofilament

Which of the following are functions of muscles?

• generating heat

• producing movement

• sending signals

• maintaining body position

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

number 2, which surrounds a fascicle

• tendon

• epimysium

• fascicle

• perimysium