Deck 6: The Skeletomuscular System

Question 1

Which of the following is an example of a long bone?

A) Patella
B) Humerus
C) Scapula
D) Frontal bone

Answer 1

B

Question 2

Which bone cell is responsible for laying down new bone?

A) Osteoblast
B) Osteoclast
C) Chondroblast
D) Osteocyte

Answer 2

A

Question 3

Which of the following functions applies to muscle?

A) Produce movement
B) Support and protection
C) Mineral storage
D) Blood cell production

Answer 3

A

Question 4

What is the first step in repairing a broken bone?

A) A bony callus forms.
B) A fibrocartilagenous callus forms.
C) A hematoma forms.
D) Osteoblasts produce spongy bone.

Question 5

Which bone forms the forehead?

A) Frontal bone
B) Mandible
C) Sphenoid
D) Occipital bone

Question 6

What is the name of the bone that forms the upper side of the skull?

A) Frontal bone
B) Occipital bone
C) Parietal bone
D) Temporal bone

Question 7

Which bone does not belong to the axial skeleton?

A) Sphenoid bone
B) Hyoid bone
C) Rib
D) Coxal bones

Question 8

How does compact bone differ from spongy bone?

A) Spongy bone is organized by Haversian systems.
B) Compact bone has many osteons.
C) Compact bone has struts called trabeculae.
D) Only spongy bone contains osteocytes that maintain the bone.

Question 9

There are approximately ________ bones in the human skeleton.

A) 128
B) 56
C) 206
D) 310

Question 10

Which of the following is a function of the skeletal and muscular systems as they work together?

A) Movement and locomotion
B) Protection of organs
C) Maintenance of upright posture
D) All of these

Question 11

Exercise:

A) strengthens muscles.
B) strengthens bones.
C) strengthens muscles and bones.
D) strengthens the attachments between muscles and bones.

Question 12

Name the two major divisions of the skeleton.

A) Axial and appendicular
B) Axial and pectoral
C) Appendicular and pectoral
D) Pectoral and pelvic

Question 13

Which of the following bone cells would be responsible for raising the calcium concentration in blood?

A) Osteoblasts
B) Osteoclasts
C) Chondroblasts
D) Osteocytes

Question 14

With which bone does the mandible articulate?

A) Maxilla
B) Ethmoid
C) Parietal
D) Temporal

Question 15

In the illustration, the diaphysis is indicated by the letter:

A) A.
B) B.
C) C.
D) D.

Question 16

The first step of endochondral ossification is:

A) formation of the marrow cavity.
B) a cartilage model forms.
C) blood vessels penetrate the central portion of the bone.
D) an epiphyseal plate forms at both ends of the bone.

Question 17

What happens to the bones of a person who is weight-training?

A) The bones become more brittle due to the stress.
B) Osteoblasts become active and increase bone density.
C) Osteoclasts become active and increase bone density.
D) Osteoclasts become active and decrease bone density.

Question 18

Which bone does not belong to the appendicular skeleton?

A) Cervical vertebrae
B) Ulna
C) Metatarsals
D) Clavicle

Question 19

The inside of the shaft of a long bone is filled with:

A) spongy bone.
B) cartilage.
C) bone marrow.
D) synovial fluid.

Question 20

Which part of the adolescent skeleton, if damaged, could result in abnormal growth?

A) Epiphyseal plate
B) Diaphysis
C) Articular cartilage
D) Adolescent skeleton

Question 21

Identify muscle C.

A) Brachialis
B) Biceps brachii
C) Brachioradialis
D) Triceps brachii

Question 22

Which bone is indicated by the arrow?

A) Clavicle
B) Scapula
C) Humerus
D) Radius

Question 23

Which bone is indicated by the arrow?

A) Clavicle
B) Scapula
C) Humerus
D) Ulna

Question 24

Synovial joints are described as:

A) immovable.
B) semimovable.
C) freely movable.
D) synarthortic.

Question 25

Which type of cartilage is found between the bones of the spinal column?

A) Elastic cartilage
B) Fibrocartilage
C) Hyaline cartilage
D) Soft cartilage

Question 26

What is the bony separation between the nasal passages called?

A) Vomer
B) Nasal bone
C) Lacrimal bone
D) Inferior nasal conchae

Question 27

Identify muscle D.

A) External oblique
B) Internal oblique
C) Linea alba
D) Rectus abdominis

Question 28

Identify muscle B.

A) Pectoralis major
B) Latissimus dorsi
C) Deltoid
D) Trapezius

Question 29

Which bone contains the foramen magnum?

A) Frontal
B) Occipital
C) Sphenoid
D) Zygomatic

Question 30

How many carpal bones are in the wrist?

A) 3
B) 5
C) 7
D) 8

Question 31

What bone is labeled C?

A) Maxilla
B) Zygomatic bone
C) Mandible
D) Occipital bone

Question 32

While playing soccer, a player gets kicked in the shin. Which bone is likely affected?

A) Tibia
B) Femur
C) Fibula
D) Humerus

Question 33

What kind of bone structure is labeled A?

A) Spongy
B) Compact
C) Osteocyte
D) Periosteum

Question 34

Identify muscle A.

A) Latissimus dorsi
B) Rectus abdominis
C) External oblique
D) Linea alba

Question 35

Identify muscle A.

A) Rectus femoris
B) Semimembranosus
C) Gracilis
D) Sartorius

Question 36

What is the name of the structure labeled B?

A) Central canal
B) Periosteum
C) Osteon
D) Compact bone

Question 37

Where are the anterior and posterior cruciate ligaments found?

A) Outside the knee joint
B) Inside the knee joint
C) Outside the shoulder joint
D) Inside the shoulder joint

Question 38

How many thoracic vertebrae are there in the spinal column?

A) 5
B) 7
C) 12
D) 14

Question 39

What bone is labeled A?

A) Zygomatic bone
B) Frontal bone
C) Parietal bone
D) Temporal bone

Question 40

What bone is labeled B?

A) Parietal bone
B) Maxilla bone
C) Mandible
D) Temporal bone

Question 41

Identify muscle C.

A) Gastronemius
B) Biceps femoris
C) Pectineus
D) Gluteus medius

Question 42

Which step is the power stroke?

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

Question 43

What is the purpose of the connective tissues associated with muscle?

A) They converge to form the tendon which attaches the muscle to bone.
B) They hold the functional parts of the muscle together so its acts as a whole unit.
C) They keep the muscle from tearing apart.
D) All of these are correct.

Question 44

Identify muscle B.

A) Deltoid
B) Trapezius
C) Latissimus dorsi
D) Sternocleidomastoid

Question 45

Individual muscle cells contract:

A) in a graded manner and weakly at first.
B) on an all or nothing basis.
C) with all the other muscle cells in the motor unit.
D) and generate a threshold stimulus.

Question 46

Which of the following is also known as the thick filament?

A) Actin
B) Myosin
C) Troponin
D) Tropomyosin

Question 47

Which structure is defined by the borders called Z-lines?

A) Fascicle
B) Muscle fiber
C) Sarcomere
D) Myosin

Question 48

The extension of the sarcolemma that conducts the contraction message is called:

A) the myofibril.
B) the T tubule.
C) the sarcoplasmic reticulum.
D) the nucleus.

Question 49

Identify muscle E.

A) Soleus
B) Tibialis anterior
C) Gastrocnemius
D) Triceps brachii

Question 50

What is the name of the structure labeled C?

A) Endomysium
B) Myofibril
C) Muscle fiber
D) Myofilament

Question 51

Which step is the formation of the cross-bridge?

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

Question 52

Which connective tissue layer is labeled A?

A) Myofilament
B) Tendon
C) Aponeurosis
D) Epimysium

Question 53

Identify muscle A.

A) Deltoid
B) Trapezius
C) Scalenes
D) Teres major

Question 54

Regarding label A, why is this vesicle fusing with the cell's membrane?

A) This is an example of endocytosis.
B) This is a lysosome releasing digestive enzymes.
C) An impulse has arrived at the neuromuscular junction.
D) The muscle has already finished contraction.

Question 55

Which structure is labeled B?

A) Fascicle
B) Muscle fiber
C) Myofilament
D) Myofibril

Question 56

Identify muscle D.

A) Deltoid
B) Anconeus
C) Triceps brachii
D) Biceps brachii

Question 57

When continuous contraction takes place in a muscle it is called:

A) tetanus.
B) summation.
C) all or none.
D) threshold stimulus.

Question 58

What is the name of the neurotransmitter that acts at the neuromuscular junction?

A) Dopamine
B) Acetylcholine
C) Serotonin
D) Norepinephrine

Question 59

What is happening during the process labeled A?

A) Myosin links to actin
B) Fresh ATP causes release of myosin
C) Power stroke
D) Calcium has caused the binding site on actin to be revealed

Question 60

Regarding label B, what would happen if this receptor was blocked?

A) ACh would bind anyway because it is stronger.
B) Nothing would change, it would just take longer.
C) ACh could not bind and no contraction could occur.
D) ACh would build up and become toxic.

Question 61

Myosin is also known as the thin filament.

Question 62

The purpose of creatine phosphate is:

A) to cause hypertrophy.
B) to lessen muscle cramps.
C) to replenish ATP supplies for a short time.
D) to build stronger bones.

Question 63

What is happening during the latent period of muscle contraction?

A) Contraction
B) Z lines are moving farther apart
C) Actin active sites are being exposed
D) Calcium is being resequestered

Question 64

If we cannot get enough oxygen to the muscle cells, what happens?

A) The muscle cell stops contracting.
B) The muscle cell makes less ATP.
C) The muscle cell continues with the Kreb's cycle but not the electron transport chain.
D) All of these are correct.

Question 65

Osteocytes live within cavities called lacunae.

Question 66

True ribs attach directly to the sternum whereas false ribs attach indirectly or not at all.

Question 67

Intramembranous ossification is responsible for the lengthening of bones.

Question 68

Which type of muscle fiber is the most powerful?

A) Fast twitch fibers
B) Slow twitch fibers
C) Fast-oxidative glycolytic fibers
D) Slow oxidative fibers

Question 69

The fascicles are the "stringy" tabs that you see across a cut of raw steak.

Question 70

The muscular system can produce movement of the body without the assistance of other systems.

Question 71

The muscular system plays a role in protection of the internal organs.

Question 72

The sinuses are a defect in bone growth and have no real purpose.

Question 73

During bone healing, initially the callus is composed of:

A) compact bone.
B) fibrous connective tissue.
C) spongy bone.
D) osteoclasts.

Question 74

A motor neuron and all the muscle fibers it controls is called a:

A) nerve.
B) myofiber.
C) muscle unit.
D) motor unit.

Question 75

Actin covers the binding site on myosin.

Question 76

The lacrimal bone contains a small passage for tears to drain into the nasal cavity.

Question 77

The most mobile of the synovial joints is the:

A) elbow.
B) knee.
C) shoulder.
D) hip.

Question 78

Why is the aerobic pathway the most efficient way to supply energy?

A) It uses oxygen as the driving force.
B) It supplies the most ATP.
C) It makes the most use of the energy in glucose.
D) All of these are correct.

Question 79

There is no such thing as an immovable joint.

Question 80

A closed reduction is when aligning a broken bone does not involve cutting the skin.