Question 1

Which muscle is located in the lower extremities?

Accepted Answer

A) Peroneus longus 
B) Latissimus dorsi 
C) Serratus anterior 
D) Pectoralis major 
A) Peroneus longus 
B) Latissimus dorsi 
C) Serratus anterior 
D) Pectoralis major A

Question 2

Actin is

Accepted Answer

A) located within the neuromuscular junction. 
B) a contractile protein that is part of the thin filament. 
C) called the thick filament. 
D) stored within the sarcoplasmic reticulum. 
A) located within the neuromuscular junction. 
B) a contractile protein that is part of the thin filament. 
C) called the thick filament. 
D) stored within the sarcoplasmic reticulum. B

Question 3

The brachialis and brachioradialis

Accepted Answer

A) flex the forearm at the elbow. 
B) extend the hand. 
C) are antagonistic to the biceps brachii. 
D) shrug the shoulders. 
A) flex the forearm at the elbow. 
B) extend the hand. 
C) are antagonistic to the biceps brachii. 
D) shrug the shoulders. A

Question 4

Which muscle is located in the upper back and posterior neck region (contraction of this muscle causes you to look up at the sky)?

Accepted Answer

A) Pectoralis major 
B) Sternocleidomastoid 
C) Trapezius 
D) Diaphragm 
A) Pectoralis major 
B) Sternocleidomastoid 
C) Trapezius 
D) Diaphragm

Question 5

Which of the following increases the force of contraction of a whole muscle?

Accepted Answer

A) Twitch 
B) Contracture 
C) Ossification 
D) Recruitment 
A) Twitch 
B) Contracture 
C) Ossification 
D) Recruitment

Question 6

Where are the pronators and supinators located?

Accepted Answer

A) Thigh 
B) Abdomen 
C) Lower back 
D) Upper extremities 
A) Thigh 
B) Abdomen 
C) Lower back 
D) Upper extremities

Question 7

Which of the following activates the NM receptors within the neuromuscular junction?

Accepted Answer

A) Acetylcholinesterase 
B) Calcium 
C) Troponin 
D) ACh 
A) Acetylcholinesterase 
B) Calcium 
C) Troponin 
D) ACh

Question 8

Which of the following is true of the hamstrings?

Accepted Answer

A) Extension of the thigh 
B) Forms posterior fossa 
C) Biceps femoris 
D) All of the above 
A) Extension of the thigh 
B) Forms posterior fossa 
C) Biceps femoris 
D) All of the above

Question 9

Acetylcholinesterase

Accepted Answer

A) inactivates the NM receptors. 
B) is the stimulus for the release of calcium from the SR. 
C) degrades ACh. 
D) binds calcium,making it unavailable to the sarcomere. 
A) inactivates the NM receptors. 
B) is the stimulus for the release of calcium from the SR. 
C) degrades ACh. 
D) binds calcium,making it unavailable to the sarcomere.

Question 10

Which flat muscle covers the forehead and raises the eyebrows (for a "surprised" look)?

Accepted Answer

A) Frontalis 
B) Zygomaticus 
C) Masseter 
D) Buccinator 
A) Frontalis 
B) Zygomaticus 
C) Masseter 
D) Buccinator

Question 11

This large anterior chest muscle inserts on the anterior humerus and has its origins on the clavicle,upper ribs,and sternum.It allows a person to point toward an object directly in front of him.

Accepted Answer

A) Sternocleidomastoid 
B) Deltoid 
C) Erector spinae 
D) Pectoralis major 
A) Sternocleidomastoid 
B) Deltoid 
C) Erector spinae 
D) Pectoralis major

Question 12

The quadriceps femoris group and the hamstrings

Accepted Answer

A) lie along the anterior part of the leg. 
B) flex the foot. 
C) lie along the thigh. 
D) shrug the shoulders. 
A) lie along the anterior part of the leg. 
B) flex the foot. 
C) lie along the thigh. 
D) shrug the shoulders.

Question 13

The levator palpebrae superioris

Accepted Answer

A) purses the lips. 
B) allows one to whistle. 
C) raises the eyelids. 
D) wiggles the nose. 
A) purses the lips. 
B) allows one to whistle. 
C) raises the eyelids. 
D) wiggles the nose.

Question 14

On which large muscle do you sit?

Accepted Answer

A) Latissimus dorsi 
B) Gastrocnemius 
C) Gluteus maximus 
D) Rectus femoris 
A) Latissimus dorsi 
B) Gastrocnemius 
C) Gluteus maximus 
D) Rectus femoris

Question 15

What is the function of the masseter muscle?

Accepted Answer

A) Adducts the thigh 
B) Chews food 
C) Lifts the eyelid 
D) Flexes the forearm at the elbow 
A) Adducts the thigh 
B) Chews food 
C) Lifts the eyelid 
D) Flexes the forearm at the elbow

Question 16

Which of the following forms cross-bridges with actin?

Accepted Answer

A) Sarcoplasmic reticulum 
B) T tubules 
C) Myosin 
D) Sarcolemma 
A) Sarcoplasmic reticulum 
B) T tubules 
C) Myosin 
D) Sarcolemma

Question 17

The orbicularis oris muscle

Accepted Answer

A) surrounds the mouth. 
B) flexes the head. 
C) is the smiling muscle. 
D) closes the eye. 
A) surrounds the mouth. 
B) flexes the head. 
C) is the smiling muscle. 
D) closes the eye.

Question 18

Which of the following does not refer to the thin filament?

Accepted Answer

A) Myosin binding site 
B) Troponin 
C) Tropomyosin 
D) Myosin 
A) Myosin binding site 
B) Troponin 
C) Tropomyosin 
D) Myosin

Question 19

Fascicles are

Accepted Answer

A) muscle fibers bound together by connective tissue. 
B) ACh-filled vesicles. 
C) ATP-filled vesicles. 
D) contractile proteins. 
A) muscle fibers bound together by connective tissue. 
B) ACh-filled vesicles. 
C) ATP-filled vesicles. 
D) contractile proteins.

Question 20

Which muscle attaches to the cranial aponeurosis and wrinkles the forehead?

Accepted Answer

A) Frontalis 
B) Buccinator 
C) Orbicularis oculi 
D) Platysma 
A) Frontalis 
B) Buccinator 
C) Orbicularis oculi 
D) Platysma

Exam 9: Muscular System

Which muscle is located in the lower extremities?

Actin is

The brachialis and brachioradialis

Which muscle is located in the upper back and posterior neck region (contraction of this muscle causes you to look up at the sky)?

Which of the following increases the force of contraction of a whole muscle?

Where are the pronators and supinators located?

Which of the following activates the NM receptors within the neuromuscular junction?

Which of the following is true of the hamstrings?

Acetylcholinesterase

Which flat muscle covers the forehead and raises the eyebrows (for a "surprised" look)?

This large anterior chest muscle inserts on the anterior humerus and has its origins on the clavicle,upper ribs,and sternum.It allows a person to point toward an object directly in front of him.

The quadriceps femoris group and the hamstrings

The levator palpebrae superioris

On which large muscle do you sit?

What is the function of the masseter muscle?

Which of the following forms cross-bridges with actin?

The orbicularis oris muscle

Which of the following does not refer to the thin filament?

Fascicles are

Which muscle attaches to the cranial aponeurosis and wrinkles the forehead?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Anatomy of the Heart

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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