What section is denoted by letter A?

• H zone

• I band

• Z disk

• A band

Which of the following is denoted by the letter B?

• H zone

• I band

• Z disk

• A band

1. Which of the following is denoted by the letter C?

• actin

• myosin

• myofibril

• zwischenscheibe

What occurs at the H zone during muscle (concentric) contraction?

• it lengthens

• it shortens

• it stays the same

• more of them are created

Actin and Myosin are considered which of the following:

• fascicles

• myofibrils

• myofilaments

• muscle types

Number 5 refers to a bundle of cells known as a:

• fascicle

• tendon

• muscle fiber

• myofilament

Tags

NGSS.HS-LS1-2

Number 2 refers to a fibrous connective tissue lining that covers the muscle known as the:

• epimysium

• perimysium

• endomysium

• tendon

Number 6 is pointing to a connective tissue that surrounds the individual muscle cells. This is known as the:

• epimysium

• perimysium

• endomysium

• tendon

The cell membrane of a muscle cell is knowns as the:

• neurolemma

• sarcolemma

• sarcoplasmic reticulum

• neuromuscular junction

Which of the following is ions/molecules binds with troponin to activate the actin binding sites.

• Na+

• Ca++

• ATP

• acetylcholine