Question 1

At each end of the muscle,the collagen fibers of the epimysium,perimysium,and endomysium,come together to form a

Accepted Answer

A) tendon. 
B) satellite cell. 
C) ligament. 
D) tenosynovium. 
E) sheath. 
A) tendon. 
B) satellite cell. 
C) ligament. 
D) tenosynovium. 
E) sheath.

Question 2

Which of the following best describes the term Z line?

Accepted Answer

A) protein that accounts for elasticity of resting muscle 
B) repeating unit of striated myofibrils 
C) storage site for calcium ions 
D) thin filaments are anchored here 
E) largely made of myosin molecules 
A) protein that accounts for elasticity of resting muscle 
B) repeating unit of striated myofibrils 
C) storage site for calcium ions 
D) thin filaments are anchored here 
E) largely made of myosin molecules

Question 3

A patient takes a medication that blocks ACh receptors of skeletal muscle fibers.What is this drug's effect on skeletal muscle contraction?

Accepted Answer

A) increases tone in the muscle 
B) causes a strong contraction similar to a "charlie horse" cramp 
C) increases the muscle's excitability 
D) produces a strong,continuous state of contraction 
E) reduces the muscle's ability for contraction 
A) increases tone in the muscle 
B) causes a strong contraction similar to a "charlie horse" cramp 
C) increases the muscle's excitability 
D) produces a strong,continuous state of contraction 
E) reduces the muscle's ability for contraction

Question 4

Which of the following become connected by myosin cross-bridges during muscle contraction?

Accepted Answer

A) thin filaments and thick filaments 
B) thick filaments and titin filaments 
C) z disks and actin filaments 
D) thick filaments and t-tubules 
E) thin filaments and t-tubules 
A) thin filaments and thick filaments 
B) thick filaments and titin filaments 
C) z disks and actin filaments 
D) thick filaments and t-tubules 
E) thin filaments and t-tubules

Question 5

Which of the following best describes the term titin?

Accepted Answer

A) protein that accounts for elasticity of resting muscle 
B) repeating unit of striated myofibrils 
C) storage and release site for calcium ions 
D) thin filaments are anchored here 
E) largely made of myosin molecules 
A) protein that accounts for elasticity of resting muscle 
B) repeating unit of striated myofibrils 
C) storage and release site for calcium ions 
D) thin filaments are anchored here 
E) largely made of myosin molecules

Question 6

A muscle produces its highest tension when in complete

Accepted Answer

A) recovery. 
B) treppe. 
C) wave summation. 
D) aerobic metabolism. 
E) tetanus. 
A) recovery. 
B) treppe. 
C) wave summation. 
D) aerobic metabolism. 
E) tetanus.

Question 7

You try to pick up an object and discover that it is much heavier than you expected.Which process must occur in the muscle to increase tension so you can pick up the object?

Accepted Answer

A) wave summation 
B) isotonic contraction 
C) complete tetanus 
D) recruitment 
E) treppe 
A) wave summation 
B) isotonic contraction 
C) complete tetanus 
D) recruitment 
E) treppe

Question 8

Which of the following hormones directly stimulates growth of muscle tissue,leading to increased muscle mass?

Accepted Answer

A) epinephrine 
B) thyroid hormone 
C) testosterone 
D) parathyroid hormone 
E) calcitonin 
A) epinephrine 
B) thyroid hormone 
C) testosterone 
D) parathyroid hormone 
E) calcitonin

Question 9

Figure 10-1 Skeletal Muscle Fiber
Use Figure 10-1 to answer the following questions:
-Identify the structure labeled " 1."

Accepted Answer

A) mitochondria 
B) glycogen 
C) ATP 
D) myofibril 
E) synaptic vesicle 
A) mitochondria 
B) glycogen 
C) ATP 
D) myofibril 
E) synaptic vesicle

Question 10

The contraction of a muscle exerts a pull on a bone because muscles attach to bones by

Accepted Answer

A) ligaments. 
B) bursae. 
C) tendons. 
D) fasciae. 
E) myofibrils. 
A) ligaments. 
B) bursae. 
C) tendons. 
D) fasciae. 
E) myofibrils.

Question 11

A muscle producing almost peak tension during rapid cycles of contraction and relaxation is said to be in

Accepted Answer

A) incomplete tetanus. 
B) complete tetanus. 
C) treppe. 
D) wave summation. 
E) recruitment. 
A) incomplete tetanus. 
B) complete tetanus. 
C) treppe. 
D) wave summation. 
E) recruitment.

Question 12

Figure 10-1 Skeletal Muscle Fiber
Use Figure 10-1 to answer the following questions:
-Where would calcium ions be predominately found?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 8 
E) 9 
A) 1 
B) 2 
C) 4 
D) 8 
E) 9

Question 13

At peak levels of muscle exertion the mitochondria can supply

Accepted Answer

A) all of the energy required by the muscle. 
B) 80 percent of the energy required by the muscle. 
C) more than half of the energy required by the muscle. 
D) only about one-third of the energy required by the muscle. 
E) only about 10 percent of the energy required by the muscle. 
A) all of the energy required by the muscle. 
B) 80 percent of the energy required by the muscle. 
C) more than half of the energy required by the muscle. 
D) only about one-third of the energy required by the muscle. 
E) only about 10 percent of the energy required by the muscle.

Question 14

Thin filaments are mostly made of the protein

Accepted Answer

A) actin. 
B) titin. 
C) myosin. 
D) tropomyosin. 
E) nebulin. 
A) actin. 
B) titin. 
C) myosin. 
D) tropomyosin. 
E) nebulin.

Question 15

Figure 10-2 Muscle Contractions
Use Figure 10-2 to answer the following questions:
-What is the contraction in graph (a)called?

Accepted Answer

A) complete tetanus 
B) incomplete tetanus 
C) twitch 
D) wave summation 
E) treppe 
A) complete tetanus 
B) incomplete tetanus 
C) twitch 
D) wave summation 
E) treppe

Question 16

Each thin filament consists of

Accepted Answer

A) two actin protein strands coiled helically around each other. 
B) chains of myosin molecules. 
C) six molecules coiled into a helical structure. 
D) a rod-shaped structure with "heads" projecting from each end. 
E) a double strand of myosin molecules. 
A) two actin protein strands coiled helically around each other. 
B) chains of myosin molecules. 
C) six molecules coiled into a helical structure. 
D) a rod-shaped structure with "heads" projecting from each end. 
E) a double strand of myosin molecules.

Exam 10: Muscle Tissue

At each end of the muscle,the collagen fibers of the epimysium,perimysium,and endomysium,come together to form a

Which of the following best describes the term Z line?

A patient takes a medication that blocks ACh receptors of skeletal muscle fibers.What is this drug's effect on skeletal muscle contraction?

Which of the following become connected by myosin cross-bridges during muscle contraction?

Which of the following best describes the term titin?

A muscle produces its highest tension when in complete

You try to pick up an object and discover that it is much heavier than you expected.Which process must occur in the muscle to increase tension so you can pick up the object?

Which of the following hormones directly stimulates growth of muscle tissue,leading to increased muscle mass?

Figure 10-1 Skeletal Muscle Fiber Use Figure 10-1 to answer the following questions: -Identify the structure labeled " 1."

The contraction of a muscle exerts a pull on a bone because muscles attach to bones by

A muscle producing almost peak tension during rapid cycles of contraction and relaxation is said to be in

Figure 10-1 Skeletal Muscle Fiber Use Figure 10-1 to answer the following questions: -Where would calcium ions be predominately found?

At peak levels of muscle exertion the mitochondria can supply

Thin filaments are mostly made of the protein

Figure 10-2 Muscle Contractions Use Figure 10-2 to answer the following questions: -What is the contraction in graph (a)called?

Each thin filament consists of

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

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