Chapter 11 Principles of Anatomy & Physiology 14th edition by Gerard J Tortora

Chapter 11 Principles of Anatomy & Physiology 14th edition by Gerard J Tortora

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

1) Most muscles cross at least one

 

1. a) tendon
2. b) joint
3. c) bone
4. d) ligament
5. e) body plane

 

Answer: b

 

Difficulty: Easy

Study Objective 1: SO 11.1 Describe how skeletal muscles produce movement.

Study Objective 2: SO 11.1.1 Describe the relationship between bones and skeletal muscles in producing body movements.

Section Reference 1: Sec 11.1 How Skeletal Muscles Produce Movements

 

 

2) The attachment of a muscle’s tendon to the stationary bone is called the _____; the attachment of the muscle’s other tendon to the movable bone is called the _____.

 

1. a) origin, action
2. b) insertion, action
3. c) origin, insertion
4. d) insertion, origin
5. e) insertion, action

 

Answer: c

 

Difficulty: Easy

Study Objective 1: SO 11.1 Describe how skeletal muscles produce movement.

Study Objective 2: SO 11.1.1 Describe the relationship between bones and skeletal muscles in producing body movements.

Section Reference 1: Sec 11.1 How Skeletal Muscles Produce Movements

 

 

3) A lever is acted on at two different points by two different forces which are called the

 

1. a) fulcrum and resistance.
2. b) leverage and load.
3. c) lever and resistance.
4. d) effort and load.
5. e) lever and effort.

 

Answer: d

 

Difficulty: Medium

Study Objective 1: SO 11.1 Describe how skeletal muscles produce movement.

Study Objective 2: SO 11.1.2 Define lever and fulcrum, and compare the three types of levers based on location of the fulcrum, effort, and load.

Section Reference 1: Sec 11.1 How Skeletal Muscles Produce Movements

 

 

4) Motion will occur in a muscle when the _____ supplied exceeds the _____.

 

1. a) effort, load
2. b) resistance, lever
3. c) load, effort
4. d) load, resistance
5. e) lever, effort

 

Answer: a

 

Difficulty: Medium

Study Objective 1: SO 11.1 Describe how skeletal muscles produce movement.

Study Objective 2: SO 11.1.2 Define lever and fulcrum, and compare the three types of levers based on location of the fulcrum, effort, and load.

Section Reference 1: Sec 11.1 How Skeletal Muscles Produce Movements

 

 

Question type: Essay

 

 

5) With reference to the effort and load, describe the main difference between a lever operating with a mechanical advantage versus a lever operating at a mechanical disadvantage.

 

Answer:

 

Difficulty: Medium

Study Objective 1: SO 11.1 Describe how skeletal muscles produce movement.

Study Objective 2: SO 11.1.2 Define lever and fulcrum, and compare the three types of levers based on location of the fulcrum, effort, and load.

Section Reference 1: Sec 11.1 How Skeletal Muscles Produce Movements

Solution: A lever operates at a mechanical advantage when a smaller effort can move a heavier load. The effort moves a greater distance at a faster rate than the load. A lever operates at a mechanical disadvantage when a larger effort moves a lighter load. The effort moves more slowly and for a shorter distance than the load