Question 1

Which muscles share the same primary action?

Accepted Answer

A)  Gluteus maximus and iliacus 
B)  Gastrocnemius and soleus 
C)  Zygomaticus and platysma 
D)  Brachialis and triceps brachii 
A)  Gluteus maximus and iliacus 
B)  Gastrocnemius and soleus 
C)  Zygomaticus and platysma 
D)  Brachialis and triceps brachii

Question 2

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

Accepted Answer

A)  ATP 
B)  ADP 
C)  sodium 
D)  potassium 
E)  myoglobin 
A)  ATP 
B)  ADP 
C)  sodium 
D)  potassium 
E)  myoglobin

Question 3

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

Accepted Answer

A)  Inner thigh 
B)  Buttocks 
C)  Front of thigh 
D)  Back of calf 
A)  Inner thigh 
B)  Buttocks 
C)  Front of thigh 
D)  Back of calf

Question 4

For the biceps brachii, triceps brachii, and the quadriceps femoris, what is referred to by the prefixes "bi-", "tri-", and "quad-"?

Accepted Answer

A)  The number of heads (origins) 
B)  The number of bones that are moved when the muscle contracts 
C)  The number of insertions 
D)  The number of aponeuroses bundling the muscles together 
A)  The number of heads (origins) 
B)  The number of bones that are moved when the muscle contracts 
C)  The number of insertions 
D)  The number of aponeuroses bundling the muscles together

Question 5

Acetylcholinesterase breaks down the cross-bridge linkages between myosin to actin.

Accepted Answer

A) True 
 B)False

Question 6

Following stenuous exercise, levels of ATP, creatine phosphate, oxygen, and glucose must be returned to normal levels. This situation, called __________, may take several hours to complete.

Accepted Answer

A)  oxygen debt 
B)  muscle atrophy 
C)  aerobic respiration 
D)  tetany 
A)  oxygen debt 
B)  muscle atrophy 
C)  aerobic respiration 
D)  tetany

Question 7

In skeletal muscle, the thick filaments are mainly composed of ___________.

Accepted Answer

A)  myosin 
B)  actin 
C)  myofibrils 
D)  sarcoplasm 
E)  Z lines 
A)  myosin 
B)  actin 
C)  myofibrils 
D)  sarcoplasm 
E)  Z lines

Question 8

As you go to lift your backpack off of the floor, there is a period of time when the muscles of your arm and back are contracting but your backpack has yet to move. The muscles are developing tension before they begin to shorten and before the bag begins to be lifted. This type of contraction is called an __________ contraction.

Accepted Answer

A)  isotonic 
B)  isometric 
A)  isotonic 
B)  isometric

Question 9

What binds to actin at its binding sites, allowing the formation of cross-bridges?

Accepted Answer

A)  ATP 
B)  Myosin 
C)  Troponin 
D)  Tropomyosin 
E)  Creatine 
A)  ATP 
B)  Myosin 
C)  Troponin 
D)  Tropomyosin 
E)  Creatine

Question 10

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

Accepted Answer

A)  Sarcomeres 
B)  Z lines 
C)  Myosin 
D)  Myofibrils 
E)  Transverse tubules 
A)  Sarcomeres 
B)  Z lines 
C)  Myosin 
D)  Myofibrils 
E)  Transverse tubules

Question 11

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

Accepted Answer

A)  ATP 
B)  ADP 
C)  sodium 
D)  potassium 
E)  myoglobin 
A)  ATP 
B)  ADP 
C)  sodium 
D)  potassium 
E)  myoglobin

Question 12

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

Accepted Answer

A)  Inner thigh 
B)  Buttocks 
C)  Front of thigh 
D)  Back of calf 
A)  Inner thigh 
B)  Buttocks 
C)  Front of thigh 
D)  Back of calf

Question 13

One factor that may contribute to the development of muscle fatigue is an accumulation of the __________ resulting from anaerobic metabolism.

Accepted Answer

The answer of One factor that may contribute to the...

Question 14

What is the product of the aerobic breakdown of glucose?

Accepted Answer

A)  Creatine phosphate 
B)  Pyruvic acid 
C)  Lactic acid 
D)  Carbon dioxide, water, and ATP 
A)  Creatine phosphate 
B)  Pyruvic acid 
C)  Lactic acid 
D)  Carbon dioxide, water, and ATP

Question 15

What are fascicles?

Accepted Answer

A)  Bundles of muscle fibers 
B)  Bundles of collagen fibers 
C)  Bundles of myofibrils 
D)  Bundles of thick and thin filaments 
E)  Bundles of smooth muscle cells 
A)  Bundles of muscle fibers 
B)  Bundles of collagen fibers 
C)  Bundles of myofibrils 
D)  Bundles of thick and thin filaments 
E)  Bundles of smooth muscle cells

Question 16

The enlargement of muscle fibers as a result of exercise is called _______________.

Accepted Answer

The answer of The enlargement of muscle fibers as a...

Question 17

Muscles that assist a prime mover in causing a movement are called _______________.

Accepted Answer

The answer of Muscles that assist a prime mover in...

Question 18

What type of muscle fiber is large in diameter and contains abundant glycogen and relatively few mitochondria?

Accepted Answer

A)  Fast fibers 
B)  Slow fibers 
A)  Fast fibers 
B)  Slow fibers

Question 19

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

Accepted Answer

A)  To flex the knee 
B)  To flex the hip 
C)  To extend the knee 
D)  To extend the hip 
A)  To flex the knee 
B)  To flex the hip 
C)  To extend the knee 
D)  To extend the hip

Question 20

ATP is necessary for muscle relaxation.

Accepted Answer

A) True 
 B)False

Which muscles share the same primary action?

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

For the biceps brachii, triceps brachii, and the quadriceps femoris, what is referred to by the prefixes "bi-", "tri-", and "quad-"?

Acetylcholinesterase breaks down the cross-bridge linkages between myosin to actin.

Following stenuous exercise, levels of ATP, creatine phosphate, oxygen, and glucose must be returned to normal levels. This situation, called __________, may take several hours to complete.

In skeletal muscle, the thick filaments are mainly composed of ___________.

What binds to actin at its binding sites, allowing the formation of cross-bridges?

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

One factor that may contribute to the development of muscle fatigue is an accumulation of the __________ resulting from anaerobic metabolism.

What is the product of the aerobic breakdown of glucose?

What are fascicles?

The enlargement of muscle fibers as a result of exercise is called _______________.

Muscles that assist a prime mover in causing a movement are called _______________.

What type of muscle fiber is large in diameter and contains abundant glycogen and relatively few mitochondria?

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

ATP is necessary for muscle relaxation.

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Filters

Exam 8: Muscular System

Which muscles share the same primary action?

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

For the biceps brachii, triceps brachii, and the quadriceps femoris, what is referred to by the prefixes "bi-", "tri-", and "quad-"?

Acetylcholinesterase breaks down the cross-bridge linkages between myosin to actin.

Following stenuous exercise, levels of ATP, creatine phosphate, oxygen, and glucose must be returned to normal levels. This situation, called __________, may take several hours to complete.

In skeletal muscle, the thick filaments are mainly composed of ___________.

What binds to actin at its binding sites, allowing the formation of cross-bridges?

Skeletal muscle cells appear striated because of the presence of what parallel bundles?

After death, rigor mortis develops as levels of calcium in the sarcoplasm increase and levels of __________ decrease.

A muscle that will adduct the thigh (moving it toward the midline of the body) will be located in what area?

One factor that may contribute to the development of muscle fatigue is an accumulation of the __________ resulting from anaerobic metabolism.

What is the product of the aerobic breakdown of glucose?

What are fascicles?

The enlargement of muscle fibers as a result of exercise is called _______________.

Muscles that assist a prime mover in causing a movement are called _______________.

What type of muscle fiber is large in diameter and contains abundant glycogen and relatively few mitochondria?

Consider a muscle that originates on the posterior femur and inserts on the posterior tibia. What is the action of this muscle?

ATP is necessary for muscle relaxation.

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Pregnancy, Growth, Development, and Genetics

Nervous System

The Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestion and Nutrition

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Filters