Question 1

What structure in skeletal muscle cells functions in calcium storage?

Accepted Answer

A)  intermediate filament network 
B)  sarcoplasmic reticulum 
C)  mitochondria 
D)  myofibrillar network 
A)  intermediate filament network 
B)  sarcoplasmic reticulum 
C)  mitochondria 
D)  myofibrillar network

Question 2

Which of the following statements is most accurate?

Accepted Answer

A)  T tubules may be sliding during isotonic contraction. 
B)  Myofilaments slide during isometric contractions. 
C)  Muscle tension remains relatively constant during isotonic contraction. 
D)  The I band lengthens during isotonic contraction. 
A)  T tubules may be sliding during isotonic contraction. 
B)  Myofilaments slide during isometric contractions. 
C)  Muscle tension remains relatively constant during isotonic contraction. 
D)  The I band lengthens during isotonic contraction.

Question 3

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Accepted Answer

A) True 
 B)False

Question 4

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

Accepted Answer

A)  elastic (titin) filaments 
B)  potassium (K+) leak channels 
C)  acetylcholine receptors in the motor end plate 
D)  thick (myosin) filaments 
A)  elastic (titin) filaments 
B)  potassium (K+) leak channels 
C)  acetylcholine receptors in the motor end plate 
D)  thick (myosin) filaments

Question 5

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Accepted Answer

A)  because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers 
B)  there is little to no benefit from recruiting slow oxidative fibers first and therefore it is in fact fast glycolytic fibers that will be recruited first 
C)  recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers 
D)  this will help to allow for fine control with delicate contractile force with a small stimulus 
A)  because they are slower to respond, slow oxidative fibers must be stimulated first in order to contract simultaneously with the faster fibers 
B)  there is little to no benefit from recruiting slow oxidative fibers first and therefore it is in fact fast glycolytic fibers that will be recruited first 
C)  recruiting slow oxidative fibers early helps to tire them out first so that they won't interfere with the more powerful contractions of fast glycolytic fibers 
D)  this will help to allow for fine control with delicate contractile force with a small stimulus

Question 6

Figure 9.1
Using Figure 9.1, match the following:
-Individual muscle fiber.

Accepted Answer

A) A 
B) E 
C) D 
D) C 
E) B 
A) A 
B) E 
C) D 
D) C 
E) B

Question 7

What is the functional unit of a skeletal muscle called?

Accepted Answer

A)  a myofibril 
B)  the sarcoplasmic reticulum 
C)  a sarcomere 
D)  a myofilament 
A)  a myofibril 
B)  the sarcoplasmic reticulum 
C)  a sarcomere 
D)  a myofilament

Question 8

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Accepted Answer

A)  the H zone to appear wider 
B)  the I bands to appear smaller 
C)  the I bands to appear wider 
D)  the A band to appear darker 
A)  the H zone to appear wider 
B)  the I bands to appear smaller 
C)  the I bands to appear wider 
D)  the A band to appear darker

Question 9

Match the following:
-The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

Accepted Answer

A) Tetanus 
B) Maximal stimulus 
C) Wave summation 
D) Muscle tone 
E) Multiple motor unit summation 
A) Tetanus 
B) Maximal stimulus 
C) Wave summation 
D) Muscle tone 
E) Multiple motor unit summation

What structure in skeletal muscle cells functions in calcium storage?

Which of the following statements is most accurate?

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Figure 9.1 Using Figure 9.1, match the following: -Individual muscle fiber.

What is the functional unit of a skeletal muscle called?

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Match the following: -The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

Filters

Exam 9: Muscles and Muscle Tissue

What structure in skeletal muscle cells functions in calcium storage?

Which of the following statements is most accurate?

Although there are no sarcomeres,smooth muscle still possesses thick and thin filaments.

Although all the anatomical parts of muscle work together to give it it's characteristics,which of the following proteins listed below would be most associated with the characteristics of extensibility?

A potential benefit of recruiting slow oxidative fibers for contraction before recruiting fast oxidative and fast glycolytic fibers might be ________.

Figure 9.1 Using Figure 9.1, match the following: -Individual muscle fiber.

What is the functional unit of a skeletal muscle called?

When a sarcomere contracts and thin filaments move over thick filaments you would expect to see ________.

Match the following: -The situation in which contractions become stronger due to stimulation before complete relaxation occurs.

The Human Body: an Orientation

Chemistry Comes Alive

Cells: the Living Units

Tissue: the Living Fabric

The Integumentary System

Bones and Skeletal Tissue

The Skeleton

Joints

The Muscular System

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System and Reflex Activity

The Autonomic Nervous System

The Special Senses

The Endocrine System

Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Lymphoid Organs and Tissues

The Immune System: Innate and Adaptive Body Defenses

The Respiratory System

The Digestive System

Nutrition,metabolism,and Body Temperature Regulation

The Urinary System

Fluid,electrolyte,and Acid-Base Balance

The Reproductive System

Pregnancy and Human Development

Heredity

Filters