Question 1

Which of the following is a muscle that originates from the zygomatic arch and functions in elevating the mandible?

Accepted Answer

A) masseter 
B) frontalis 
C) digastric 
D) temporalis 
E) medial pterygoid 
A) masseter 
B) frontalis 
C) digastric 
D) temporalis 
E) medial pterygoid A

Question 2

The terminal cisternae are structural features of the

Accepted Answer

A) myofilaments. 
B) sarcoplasmic reticula. 
C) myofibrils. 
D) I bands. 
E) sarcolemma. 
A) myofilaments. 
B) sarcoplasmic reticula. 
C) myofibrils. 
D) I bands. 
E) sarcolemma. B

Question 3

Which of the following is an effect of aging on the muscular system?

Accepted Answer

A) Tolerance for exercise increases. 
B) Skeletal muscles become more elastic. 
C) Skeletal muscle fibers become smaller in diameter. 
D) Muscle fibers contain more myoglobin. 
E) Scar tissue formation does not occur. 
A) Tolerance for exercise increases. 
B) Skeletal muscles become more elastic. 
C) Skeletal muscle fibers become smaller in diameter. 
D) Muscle fibers contain more myoglobin. 
E) Scar tissue formation does not occur. C

Question 4

Calcium ions are released from the sarcoplasmic reticulum during the ________ phase of contraction.

Accepted Answer

A) latent 
B) contraction 
C) twitch 
D) relaxation 
E) recovery 
A) latent 
B) contraction 
C) twitch 
D) relaxation 
E) recovery

Question 5

During moderate activity,which of the following is true regarding muscle metabolism?

Accepted Answer

A) The ATP produced is used to build energy reserves of ATP and glycogen. 
B) Most ATP is produced through glycolysis,with lactate and hydrogen ions as byproducts. 
C) Glucose and fatty acids are catabolized. 
D) Mitochondrial activity provides about one-third of the ATP consumed. 
E) Mitochondria are not involved. 
A) The ATP produced is used to build energy reserves of ATP and glycogen. 
B) Most ATP is produced through glycolysis,with lactate and hydrogen ions as byproducts. 
C) Glucose and fatty acids are catabolized. 
D) Mitochondrial activity provides about one-third of the ATP consumed. 
E) Mitochondria are not involved.

Question 6

Which of the following originates from the cartilages of ribs 2-6,the sternal body,and the clavicle?

Accepted Answer

A) teres minor 
B) supraspinatus 
C) pectoralis major 
D) teres major 
E) subscapularis 
A) teres minor 
B) supraspinatus 
C) pectoralis major 
D) teres major 
E) subscapularis

Question 7

Creatine phosphate serves to

Accepted Answer

A) cause the decomposition of ATP. 
B) supply energy to synthesize ATP. 
C) decompose ADP. 
D) synthesize ADP. 
E) synthesize glucose. 
A) cause the decomposition of ATP. 
B) supply energy to synthesize ATP. 
C) decompose ADP. 
D) synthesize ADP. 
E) synthesize glucose.

Question 8

The ________ contains vesicles filled with acetylcholine.

Accepted Answer

A) axon terminal 
B) motor end plate 
C) neuromuscular junction 
D) synaptic cleft 
E) transverse tubule 
A) axon terminal 
B) motor end plate 
C) neuromuscular junction 
D) synaptic cleft 
E) transverse tubule

Question 9

The term used to describe muscular growth in response to usage is

Accepted Answer

A) multiple sclerosis. 
B) muscular dystrophy. 
C) atrophy. 
D) hypertrophy. 
E) myopathy. 
A) multiple sclerosis. 
B) muscular dystrophy. 
C) atrophy. 
D) hypertrophy. 
E) myopathy.

Question 10

During which phase is the stimulus frequency so high that the relaxation phase is eliminated?

Accepted Answer

A) complete tetanus 
B) a twitch 
C) incomplete tetanus 
D) recovery 
E) recruitment 
A) complete tetanus 
B) a twitch 
C) incomplete tetanus 
D) recovery 
E) recruitment

Question 11

Which of the following occurs when glycolysis produces pyruvate faster than it can be used by the mitochondria?

Accepted Answer

A) Pyruvate levels drop in the cytoplasm. 
B) Lactic acid is produced. 
C) Pyruvate is converted to sucrose. 
D) Lactic acid dissociates into a water molecule and hydrogen. 
E) Oxygen is produced. 
A) Pyruvate levels drop in the cytoplasm. 
B) Lactic acid is produced. 
C) Pyruvate is converted to sucrose. 
D) Lactic acid dissociates into a water molecule and hydrogen. 
E) Oxygen is produced.

Question 12

Nonstriated,involuntary muscle is

Accepted Answer

A) cardiac. 
B) red skeletal. 
C) smooth. 
D) white skeletal. 
E) intermediate skeletal. 
A) cardiac. 
B) red skeletal. 
C) smooth. 
D) white skeletal. 
E) intermediate skeletal.

Question 13

The muscle that inserts on the coronoid process of the mandible is the

Accepted Answer

A) temporalis. 
B) masseter. 
C) orbicularis oris. 
D) zygomaticus. 
E) platysma. 
A) temporalis. 
B) masseter. 
C) orbicularis oris. 
D) zygomaticus. 
E) platysma.

Question 14

Which of the following is the origin of the pectoralis minor?

Accepted Answer

A) vertebral border near the spine 
B) coracoid process of the scapula 
C) superior portion of the sternum 
D) occipital bone of the skull 
E) anterior surfaces of ribs 3-5 
A) vertebral border near the spine 
B) coracoid process of the scapula 
C) superior portion of the sternum 
D) occipital bone of the skull 
E) anterior surfaces of ribs 3-5

Question 15

Smooth muscle cells

Accepted Answer

A) have to be innervated by motor neurons. 
B) are larger than cardiac muscle cells. 
C) are multinucleate. 
D) contain intercalated discs. 
E) are spindle-shaped. 
A) have to be innervated by motor neurons. 
B) are larger than cardiac muscle cells. 
C) are multinucleate. 
D) contain intercalated discs. 
E) are spindle-shaped.

Question 16

A sheath of connective tissue surrounding a bundle of striated muscle fibers is called

Accepted Answer

A) endomysium. 
B) perimysium. 
C) sarcolemma. 
D) epimysium. 
E) sarcoplasmic reticulum. 
A) endomysium. 
B) perimysium. 
C) sarcolemma. 
D) epimysium. 
E) sarcoplasmic reticulum.

Question 17

Each myofibril consists of approximately ________ sarcomeres.

Accepted Answer

A) 10 
B) 500 
C) 10,000 
D) 100,000 
E) 2-3 million 
A) 10 
B) 500 
C) 10,000 
D) 100,000 
E) 2-3 million

Question 18

The enzyme acetylcholinesterase causes acetylcholine to

Accepted Answer

A) break down. 
B) synthesize. 
C) bond to actin. 
D) be secreted. 
E) form cross-bridges. 
A) break down. 
B) synthesize. 
C) bond to actin. 
D) be secreted. 
E) form cross-bridges.

Question 19

Structure B

Accepted Answer

A) protects the myofibrils. 
B) attaches to actin molecules. 
C) produces ATP. 
D) conducts nerve impulses through the muscle cell. 
E) stores calcium. 
A) protects the myofibrils. 
B) attaches to actin molecules. 
C) produces ATP. 
D) conducts nerve impulses through the muscle cell. 
E) stores calcium.

Question 20

The muscle that originates from the superior surface of the pubis around the symphysis is the

Accepted Answer

A) internal oblique. 
B) external oblique. 
C) rectus abdominis. 
D) transversus abdominis. 
E) diaphragm. 
A) internal oblique. 
B) external oblique. 
C) rectus abdominis. 
D) transversus abdominis. 
E) diaphragm.

Which of the following is a muscle that originates from the zygomatic arch and functions in elevating the mandible?

The terminal cisternae are structural features of the

Which of the following is an effect of aging on the muscular system?

Calcium ions are released from the sarcoplasmic reticulum during the ________ phase of contraction.

During moderate activity,which of the following is true regarding muscle metabolism?

Which of the following originates from the cartilages of ribs 2-6,the sternal body,and the clavicle?

Creatine phosphate serves to

The ________ contains vesicles filled with acetylcholine.

The term used to describe muscular growth in response to usage is

During which phase is the stimulus frequency so high that the relaxation phase is eliminated?

Which of the following occurs when glycolysis produces pyruvate faster than it can be used by the mitochondria?

Nonstriated,involuntary muscle is

The muscle that inserts on the coronoid process of the mandible is the

Which of the following is the origin of the pectoralis minor?

Smooth muscle cells

A sheath of connective tissue surrounding a bundle of striated muscle fibers is called

Each myofibril consists of approximately ________ sarcomeres.

The enzyme acetylcholinesterase causes acetylcholine to

Structure B

The muscle that originates from the superior surface of the pubis around the symphysis is the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

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Exam 7: The Muscular System

Which of the following is a muscle that originates from the zygomatic arch and functions in elevating the mandible?

The terminal cisternae are structural features of the

Which of the following is an effect of aging on the muscular system?

Calcium ions are released from the sarcoplasmic reticulum during the ________ phase of contraction.

During moderate activity,which of the following is true regarding muscle metabolism?

Which of the following originates from the cartilages of ribs 2-6,the sternal body,and the clavicle?

Creatine phosphate serves to

The ________ contains vesicles filled with acetylcholine.

The term used to describe muscular growth in response to usage is

During which phase is the stimulus frequency so high that the relaxation phase is eliminated?

Which of the following occurs when glycolysis produces pyruvate faster than it can be used by the mitochondria?

Nonstriated,involuntary muscle is

The muscle that inserts on the coronoid process of the mandible is the

Which of the following is the origin of the pectoralis minor?

Smooth muscle cells

A sheath of connective tissue surrounding a bundle of striated muscle fibers is called

Each myofibril consists of approximately ________ sarcomeres.

The enzyme acetylcholinesterase causes acetylcholine to

Structure B

The muscle that originates from the superior surface of the pubis around the symphysis is the

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

The Reproductive System

Development and Inheritance

Filters