The Muscular System

The Muscular System

12th Grade

20 Qs

quiz-placeholder

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The Muscular System

The Muscular System

Assessment

Quiz

Biology

12th Grade

Hard

Created by

Albert Silang

Used 64+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of these is true of skeletal muscle?

spindle-shaped cells

under involuntary control

many peripherally located nuclei per muscle fiber

forms the walls of hollow internal organs

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is not a major property of muscle?

contractility

elasticity

excitability

extensibility

secretability

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given these structures:


(1) whole muscle

(2) muscle fiber (cell)

(3) myofilament

(4) myofibril

(5) muscle fasciculus


Choose the arrangement that lists the structures in the correct order from largest to smallest.

1,2,5,3,4

1,2,5,4,3

1,5,2,3,4

1,5,2,4,3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Each myofibril

is made up of many muscle fibers

contains sarcoplasmic reticulum

is made up of many sarcomeres

contains T tubules.

is the same thing as a muscle fiber.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Myosin myofilaments are

attached to the Z disk.

found primarily in the I band.

thinner than actin myofilaments.

absent from the H zone.

attached to filaments that form the M line.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these statements about the molecular structure of myofilaments is true?

Tropomyosin has a binding site for Ca2+.

The head of the myosin molecule binds to an active site on G actin.

ATPase is found on troponin.

Troponin binds to the rodlike portion of myosin.

Actin molecules have a hingelike portion, which bends and straightens during contraction.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The part of the sarcolemma that invaginates into the interior of skeletal muscle fibers is the

T tubule system

sarcoplasmic reticulum

myofibrils

mitochondria

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