Question 1

As a muscle contracts,

Accepted Answer

A)  it creates energy. 
B)  the myofibrils break down. 
C)  the sarcomeres extend. 
D)  the Z discs move closer together. 
A)  it creates energy. 
B)  the myofibrils break down. 
C)  the sarcomeres extend. 
D)  the Z discs move closer together.

Question 2

Muscle fibers contain only actin,whereas sarcomeres contain both actin and myosin.

Accepted Answer

A) True 
 B)False

Question 3

Lobsters,insects,and many other invertebrate groups have a(n)________,an external skeleton that surrounds and encloses the soft tissues it supports.

Accepted Answer

The answer of Lobsters,insects,and many other invertebrate groups have a(n)________,an...

Question 4

Examine the figure below.
 
Which letter indicates a region of a human where you would find muscle that lacks sarcomeres?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  All human muscle contains sarcomeres. 
A)  A 
B)  B 
C)  C 
D)  All human muscle contains sarcomeres.

Question 5

Which of the following statements about support structures is true?

Accepted Answer

A)  Heavier organisms have delicate skeletons relative to their body weight. 
B)  The support structures of heavier organisms account for a higher percentage of their body weight than those of lighter organisms. 
C)  Heavier organisms have stronger skeletons,relative to their body weight,than do lighter organisms. 
D)  Skeleton weight does not reflect body weight. 
A)  Heavier organisms have delicate skeletons relative to their body weight. 
B)  The support structures of heavier organisms account for a higher percentage of their body weight than those of lighter organisms. 
C)  Heavier organisms have stronger skeletons,relative to their body weight,than do lighter organisms. 
D)  Skeleton weight does not reflect body weight.

Question 6

The illustration below

Accepted Answer

A)  reveals that bone contains both hard and soft components. 
B)  suggests that bones are extremely rigid. 
C)  shows that bones are heavy and densely packed. 
D)  highlights how bones are very fragile. 
A)  reveals that bone contains both hard and soft components. 
B)  suggests that bones are extremely rigid. 
C)  shows that bones are heavy and densely packed. 
D)  highlights how bones are very fragile.

Question 7

An athlete with torn cartilage in the knee should expect

Accepted Answer

A)  a quick recovery. 
B)  bleeding around the knee due to blood loss from the cartilage. 
C)  no harmful effects from the torn cartilage. 
D)  surgery as the only approach to fixing the tear. 
A)  a quick recovery. 
B)  bleeding around the knee due to blood loss from the cartilage. 
C)  no harmful effects from the torn cartilage. 
D)  surgery as the only approach to fixing the tear.

Question 8

Actin filaments are anchored to

Accepted Answer

A)  bones. 
B)  Z discs. 
C)  ATP. 
D)  cartilage. 
A)  bones. 
B)  Z discs. 
C)  ATP. 
D)  cartilage.

Question 9

Which of the following series correctly describes the organization of muscle tissue from smallest to largest component?

Accepted Answer

A)  sarcomeres to myofibrils to muscle fibers 
B)  myofibrils to sarcomeres to muscle fibers 
C)  muscle fibers to sarcomeres to myofibrils 
D)  muscle fibers to myofibrils to sarcomeres 
A)  sarcomeres to myofibrils to muscle fibers 
B)  myofibrils to sarcomeres to muscle fibers 
C)  muscle fibers to sarcomeres to myofibrils 
D)  muscle fibers to myofibrils to sarcomeres

Question 10

In the skeleton of a house cat,compact bone forms the hard,white outer region,and ________ bone lies inside the compact bone.

Accepted Answer

The answer of In the skeleton of a house cat,compact...

Question 11

A hydrostat generates energy as it creates pressure.

Accepted Answer

A) True 
 B)False

Question 12

By analyzing the chart below,which of the following conclusion can be drawn?

Accepted Answer

A)  The skeletal portion of body weight increases with larger animals. 
B)  The skeletal portion of body weight decreases with larger animals. 
C)  The skeletal portion of body weight increases with smaller animals. 
D)  There is no correlation between the skeletal portion of body weight and animal size. 
A)  The skeletal portion of body weight increases with larger animals. 
B)  The skeletal portion of body weight decreases with larger animals. 
C)  The skeletal portion of body weight increases with smaller animals. 
D)  There is no correlation between the skeletal portion of body weight and animal size.

Question 13

The matrix of cartilage tissue is made up of

Accepted Answer

A)  collagen. 
B)  calcium. 
C)  phosphorous. 
D)  hydrostatic materials. 
A)  collagen. 
B)  calcium. 
C)  phosphorous. 
D)  hydrostatic materials.

Question 14

Humans are likely to continue breaking 100-meter sprint records with further training.

Accepted Answer

A) True 
 B)False

Question 15

The polysaccharide that forms the basis of support tissues in insects and lobsters is

Accepted Answer

A)  collagen. 
B)  chitin. 
C)  bone. 
D)  cartilage. 
A)  collagen. 
B)  chitin. 
C)  bone. 
D)  cartilage.

Question 16

In the contraction of a sarcomere,which of the following "walks" its way along filaments?

Accepted Answer

A)  Z discs 
B)  actin 
C)  myosin 
D)  myofibrils 
A)  Z discs 
B)  actin 
C)  myosin 
D)  myofibrils

Question 17

A marathon runner uses

Accepted Answer

A)  mostly fast muscle fibers. 
B)  mostly slow muscle fibers. 
C)  slower-acting neuromuscular junctions. 
D)  less myoglobin than a sprint runner. 
A)  mostly fast muscle fibers. 
B)  mostly slow muscle fibers. 
C)  slower-acting neuromuscular junctions. 
D)  less myoglobin than a sprint runner.

Question 18

One of the most common knee injuries involves the tearing of the anterior cruciate ligament (ACL).How would an injury like this affect the function of the knee?

Accepted Answer

A)  Ligaments attach muscle to bone,so tearing of the ligament would mean that muscles would no longer be able to cause the joint to bend. 
B)  Ligaments lubricate the cartilage in a joint,and a tear would allow the lubricant to leak out,causing bones to grind against each other and making it painful to bend the knee. 
C)  Ligaments hold the bones of the knee in the proper orientation,so tearing the ligament could disrupt the alignment of the knee,making bending difficult. 
D)  Ligaments are the muscles that surround a joint.Muscle tears can be painful but heal quickly and usually do not affect knee function. 
A)  Ligaments attach muscle to bone,so tearing of the ligament would mean that muscles would no longer be able to cause the joint to bend. 
B)  Ligaments lubricate the cartilage in a joint,and a tear would allow the lubricant to leak out,causing bones to grind against each other and making it painful to bend the knee. 
C)  Ligaments hold the bones of the knee in the proper orientation,so tearing the ligament could disrupt the alignment of the knee,making bending difficult. 
D)  Ligaments are the muscles that surround a joint.Muscle tears can be painful but heal quickly and usually do not affect knee function.

Question 19

Which of the following would be found in a sarcomere?

Accepted Answer

A)  cartilage 
B)  actin 
C)  collagen 
D)  chitin 
A)  cartilage 
B)  actin 
C)  collagen 
D)  chitin

Question 20

The axial skeleton includes

Accepted Answer

A)  the spinal column only. 
B)  the spinal column,skull,and rib cage. 
C)  all bones in the arms and legs. 
D)  the spinal column and pelvis. 
A)  the spinal column only. 
B)  the spinal column,skull,and rib cage. 
C)  all bones in the arms and legs. 
D)  the spinal column and pelvis.

Exam 31: Skeletons,Muscles,and Movement

As a muscle contracts,

Muscle fibers contain only actin,whereas sarcomeres contain both actin and myosin.

Lobsters,insects,and many other invertebrate groups have a(n)________,an external skeleton that surrounds and encloses the soft tissues it supports.

Examine the figure below. Which letter indicates a region of a human where you would find muscle that lacks sarcomeres?

Which of the following statements about support structures is true?

The illustration below

An athlete with torn cartilage in the knee should expect

Actin filaments are anchored to

Which of the following series correctly describes the organization of muscle tissue from smallest to largest component?

In the skeleton of a house cat,compact bone forms the hard,white outer region,and ________ bone lies inside the compact bone.

A hydrostat generates energy as it creates pressure.

By analyzing the chart below,which of the following conclusion can be drawn?

The matrix of cartilage tissue is made up of

Humans are likely to continue breaking 100-meter sprint records with further training.

The polysaccharide that forms the basis of support tissues in insects and lobsters is

In the contraction of a sarcomere,which of the following "walks" its way along filaments?

A marathon runner uses

One of the most common knee injuries involves the tearing of the anterior cruciate ligament (ACL).How would an injury like this affect the function of the knee?

Which of the following would be found in a sarcomere?

The axial skeleton includes

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