Question 1

The mineral iron is important to muscles because it:

Accepted Answer

A) enables nerve impulses to reach muscle fibers 
B) is part of myoglobin 
C) is part of myosin 
D) helps stop excessive nerve impulses to prevent fatigue 
A) enables nerve impulses to reach muscle fibers 
B) is part of myoglobin 
C) is part of myosin 
D) helps stop excessive nerve impulses to prevent fatigue

Question 2

Which statement is NOT true of cell respiration in muscles?

Accepted Answer

A) ATP is the energy product used for contraction. 
B) The water produced must be excreted. 
C) Oxygen is required for the complete breakdown of glucose. 
D) The carbon dioxide produced will be removed by the circulating blood. 
A) ATP is the energy product used for contraction. 
B) The water produced must be excreted. 
C) Oxygen is required for the complete breakdown of glucose. 
D) The carbon dioxide produced will be removed by the circulating blood.

Question 3

Tendons are made of ___ tissue,and are attached to the ___ of a muscle.

Accepted Answer

A) fibrous connective/fascia 
B) elastic connective/fascia 
C) fibrous connective/periosteum 
D) elastic connective/periosteum 
A) fibrous connective/fascia 
B) elastic connective/fascia 
C) fibrous connective/periosteum 
D) elastic connective/periosteum

Question 4

The organ system that is not directly necessary for the functioning of the muscular system is the:

Accepted Answer

A) respiratory system 
B) nervous system 
C) skeletal system 
D) digestive system 
A) respiratory system 
B) nervous system 
C) skeletal system 
D) digestive system

Question 5

Muscle sense is important for:

Accepted Answer

A) heat production,especially in cold weather 
B) coordination 
C) increasing strength in muscles 
D) relaxing when strenuous activity is over 
A) heat production,especially in cold weather 
B) coordination 
C) increasing strength in muscles 
D) relaxing when strenuous activity is over

Question 6

During exercise,one purpose of increased respiration is to:

Accepted Answer

A) remove excess body heat 
B) circulate more blood to muscles 
C) get rid of carbon dioxide more rapidly 
D) increase the blood supply within muscles 
A) remove excess body heat 
B) circulate more blood to muscles 
C) get rid of carbon dioxide more rapidly 
D) increase the blood supply within muscles

Question 7

The term oxygen debt means:

Accepted Answer

A) breathing has stopped and there is no oxygen in the blood 
B) muscles lack the oxygen needed to complete cell respiration 
C) the liver owes the muscles some oxygen 
D) there is too little oxygen in the lungs 
A) breathing has stopped and there is no oxygen in the blood 
B) muscles lack the oxygen needed to complete cell respiration 
C) the liver owes the muscles some oxygen 
D) there is too little oxygen in the lungs

Question 8

Which statement is NOT true of responses to exercise?

Accepted Answer

A) Increased heart rate pumps more blood to muscles. 
B) Carbon dioxide is removed rapidly by increased respiration. 
C) More heat is produced as cell respiration decreases. 
D) Blood flow within muscles is increased by vasodilation. 
A) Increased heart rate pumps more blood to muscles. 
B) Carbon dioxide is removed rapidly by increased respiration. 
C) More heat is produced as cell respiration decreases. 
D) Blood flow within muscles is increased by vasodilation.

Question 9

During repolarization:

Accepted Answer

A) sodium ions rush into the cell 
B) potassium ions rush into the cell 
C) sodium ions rush out of the cell 
D) potassium ions rush out of the cell 
A) sodium ions rush into the cell 
B) potassium ions rush into the cell 
C) sodium ions rush out of the cell 
D) potassium ions rush out of the cell

Question 10

The function of the sacrospinalis group is to:

Accepted Answer

A) flex the neck 
B) flex the vertebral column 
C) extend the vertebral column 
D) flex the sacrum 
A) flex the neck 
B) flex the vertebral column 
C) extend the vertebral column 
D) flex the sacrum

Question 11

The organ system that forms a framework that is moved by muscles is the:

Accepted Answer

A) nervous system 
B) circulatory system 
C) skeletal system 
D) respiratory system 
A) nervous system 
B) circulatory system 
C) skeletal system 
D) respiratory system

Question 12

Which statement is NOT true of muscle tone?

Accepted Answer

A) It produces body heat. 
B) It depends upon nerve impulses. 
C) A small number of muscle fibers in a muscle are contracted. 
D) It is a state of slight contraction that does not require ATP. 
A) It produces body heat. 
B) It depends upon nerve impulses. 
C) A small number of muscle fibers in a muscle are contracted. 
D) It is a state of slight contraction that does not require ATP.

Question 13

The function of the triceps brachii is to:

Accepted Answer

A) raise the shoulder 
B) flex the forearm 
C) extend the forearm 
D) flex the arm 
A) raise the shoulder 
B) flex the forearm 
C) extend the forearm 
D) flex the arm

Question 14

Which muscle is NOT paired with a synergist?

Accepted Answer

A) gastrocnemius and soleus 
B) iliopsoas and quadriceps femoris 
C) brachioradialis and biceps brachii 
D) gluteus medius and adductor group 
A) gastrocnemius and soleus 
B) iliopsoas and quadriceps femoris 
C) brachioradialis and biceps brachii 
D) gluteus medius and adductor group

Question 15

The function of the deltoid muscle is to:

Accepted Answer

A) lower the shoulder 
B) flex the forearm 
C) extend the forearm 
D) abduct the arm 
A) lower the shoulder 
B) flex the forearm 
C) extend the forearm 
D) abduct the arm

Question 16

The part of the brain that coordinates voluntary movement is the:

Accepted Answer

A) cerebrum: frontal lobes 
B) cerebellum 
C) cerebrum: parietal lobes 
D) cerebrum: occipital lobes 
A) cerebrum: frontal lobes 
B) cerebellum 
C) cerebrum: parietal lobes 
D) cerebrum: occipital lobes

Question 17

The organ system that transports oxygen to muscles is the:

Accepted Answer

A) nervous system 
B) circulatory system 
C) skeletal system 
D) respiratory system 
A) nervous system 
B) circulatory system 
C) skeletal system 
D) respiratory system

Question 18

Which statement is NOT true of sarcomeres?

Accepted Answer

A) Calcium ions are stored in the sarcolemma. 
B) Myosin filaments are in the center. 
C) Actin filaments are attached to the Z lines. 
D) Sarcomeres are the units of contraction. 
A) Calcium ions are stored in the sarcolemma. 
B) Myosin filaments are in the center. 
C) Actin filaments are attached to the Z lines. 
D) Sarcomeres are the units of contraction.

Question 19

In a muscle fiber,calcium ions are stored in the:

Accepted Answer

A) sarcolemma 
B) sarcomere 
C) myosin filaments 
D) sarcoplasmic reticulum 
A) sarcolemma 
B) sarcomere 
C) myosin filaments 
D) sarcoplasmic reticulum

Question 20

Which statement is NOT true of oxygen and muscles?

Accepted Answer

A) Myoglobin in muscles stores some oxygen. 
B) Hemoglobin in RBCs brings oxygen to muscles. 
C) Both hemoglobin and myoglobin are lipids that contain iron. 
D) Muscle fibers must have oxygen to complete cell respiration. 
A) Myoglobin in muscles stores some oxygen. 
B) Hemoglobin in RBCs brings oxygen to muscles. 
C) Both hemoglobin and myoglobin are lipids that contain iron. 
D) Muscle fibers must have oxygen to complete cell respiration.

Exam 8:The Muscular System-Part C

The mineral iron is important to muscles because it:

Which statement is NOT true of cell respiration in muscles?

Tendons are made of ___ tissue,and are attached to the ___ of a muscle.

The organ system that is not directly necessary for the functioning of the muscular system is the:

Muscle sense is important for:

During exercise,one purpose of increased respiration is to:

The term oxygen debt means:

Which statement is NOT true of responses to exercise?

During repolarization:

The function of the sacrospinalis group is to:

The organ system that forms a framework that is moved by muscles is the:

Which statement is NOT true of muscle tone?

The function of the triceps brachii is to:

Which muscle is NOT paired with a synergist?

The function of the deltoid muscle is to:

The part of the brain that coordinates voluntary movement is the:

The organ system that transports oxygen to muscles is the:

Which statement is NOT true of sarcomeres?

In a muscle fiber,calcium ions are stored in the:

Which statement is NOT true of oxygen and muscles?

Organization and General Plan of the Body-Part A

Organization and General Plan of the Body-Part B

Organization and General Plan of the Body-Part C

Some Basic Chemistry-Part A

Some Basic Chemistry-Part B

Some Basic Chemistry-Part C

Cells-Part A

Cells-Part B

Cells-Part C

Tissues and Membranes-Part A

Tissues and Membranes-Part B

Tissues and Membranes-Part C

The Integumentary System-Part A

The Integumentary System-Part B

The Integumentary System-Part C

The Skeletal System-Part A

The Skeletal System-Part B

The Skeletal System-Part C

The Muscular System-Part A

The Muscular System-Part B

The Nervous System-Part A

The Nervous System-Part B

The Nervous System-Part C

The Senses-Part A

The Senses-Part B

The Senses-Part C

The Endocrine System-Part A

The Endocrine System-Part B

The Endocrine System-Part C

Blood-Part A

Blood-Part B

Blood-Part C

The Heart-Part A

The Heart-Part B

The Heart-Part C

The Vascular System-Part A

The Vascular System-Part B

The Vascular System-Part C

The Lymphatic System and Immunity-Part A

The Lymphatic System and Immunity-Part B

The Lymphatic System and Immunity-Part C

The Respiratory System-Part A

The Respiratory System-Part B

The Respiratory System-Part C

The Digestive System-Part A

The Digestive System-Part B

The Digestive System-Part C

Body Temperature and Metabolism-Part A

Body Temperature and Metabolism-Part B

Body Temperature and Metabolism-Part C

The Urinary System-Part A

The Urinary System-Part B

The Urinary System-Part C

Fluid–Electrolyte and Acid–Base Balance-Part A

Fluid–Electrolyte and Acid–Base Balance-Part B

Fluid–Electrolyte and Acid–Base Balance-Part C

The Reproductive Systems-Part A

The Reproductive Systems-Part B

The Reproductive Systems-Part C

Tendons are made of _ tissue,and are attached to the _ of a muscle.