BIO 314 Exam 2

Question 1

All of the cranial bones articulate with one keystone bone which is the
A. Maxilla
B. Ethmoid
C. Hyoid
D. Sphenoid

Answer 1

D. Sphenoid

Question 2

The zygomatic such is composed of one complete bone, the process of 2 cranial bones and the process of one facial bone. These bones in the aforementioned order are the
A. Temporal, frontal, Maxilla, sphenoid
B. Temporal, frontal, parental, zygomatic
C. Zygomatic, maxilla, sphenoid, frontal
D. Zygomatic, frontal, temporal, maxilla
E. None

Answer 2

D. Zygomatic, frontal, temporal, maxilla

Question 3

Which of the following are cranial bones
A. Ethmoid and sphenoid
B. Temporal and lacrimal
C. Frontal and nasal
D. Ethmoid, sphenoid, temporal and lacrimal
E. Ethmoid, sphenoid, frontal, nasal
F. All of the above

Answer 3

A. Ethmoid and sphenoid

Question 4

A part of the axial skeleton, u shaped bone doesn’t articulate with any other bone
A. Vomer
B. Xiphoid
C. Epistopheus
D. Hyoid
E. Dens

Answer 4

D. Hyoid

Question 5

The vertebral column consists of
A. 8 C vertebrae
B. 5 L vertebrae
C. 12 T vertebrae
D. 2 of the above
E. All of the above

Answer 5

D. 2 of the above

Question 6

The vertebrae which have formed in each transverse process, generally short bifurcated spinous processes and large triangular spinal foramina are
A. C vertebrae
B. T vertebrae
C. L vertebrae
D. Sacral vertebrae
E. More than one of the above

Answer 6

A. C vertebrae

Question 7

2 bones, the clavicle and scapula compose the pectoral girdle. This girdle forms only one joint with the axial skeleton at the sternoclavicular joint.
A. True
B. False

Answer 7

A. True

Question 8

The following is a component of the axial skeletal system
A. Scapula
B. Clavicle
C. Stapes
D. Two of the above
E. All of the above

Answer 8

C. Stapes

Question 9

The super 10 pairs of ribs are called true rubs, 2 most inferior pair of ribs are false ribs and do not articulate with sternum at all these are also called floating ribs
A. True
B. False

Answer 9

B. False

Question 10

The ankle of the foot consists of tarsals whereas the arches exclusively consist of metatarsals
A. True
B. False

Answer 10

B. False

Question 11

The talus articulates with the distal processes of 2 long bones which form a box into which the talus fits. 2 bones and their processes are
A. Medial and lateral styloid processes of radius and ulna
B. Medial and lateral malleolus of tibia and fibula
C. Medial and lateral styloid processes of tibia and fibula
D. Medial and lateral epicondyle of radius and ulna

Answer 11

B. Medial and lateral malleolus of tibia and fibula

Question 12

The os coxae consists of the _ fused together at a joint known ad The acetabulum

Answer 12

Ilium, ischium and pubis

Question 13

The humerus articulates with the proximal processes of 2 long bones which form hinge and rotational joints. The 2 distal long bones and their associated processes are the

Answer 13

Head of radius and trochanteric notch of ulna

Question 14

Facial bones experience a much greater rate of growth than cranial bones during child development

Answer 14

True

Question 15

Integrity of knee joint is maintained by which of the following components (include all components)
A. Medial and lateral meniscus
B. Medial and lateral cruciate ligaments
C. Ligamentum teres
D. 2 of the above
E. All of the above

Answer 15

A. Medial and lateral meniscus

Question 16

Pubic symphysis is a synovial joint with limited mobility and high stability

Answer 16

False

Question 17

Integrity of glenohumeral joint is maintained by which of the following components (include all)
A. Labrum
B. Ligamentum Teres
C. Tibial and fibular collateral ligaments
D. 2 of the above
E. All of the above

Answer 17

A. Labrum

Question 18

The functional contractile unit of skeletal myskce is the

Answer 18

Sacromere

Question 19

The connection between the nervous system and skeletal myofiber is called a

Answer 19

Neuromuscular junction

Question 20

The space between a motor neuron and the sacrolemma of a myofiber is the

Answer 20

Synaptic cleft

Question 21

The collagenous fibers of a tendon become continuous blend with the

Answer 21

Epimysium of muscle

Question 22

During contraction of skeletal muscle which of the following is true of sacromere
A. A band becomes narrower
B. H zone becomes narrower
C. I band becomes narrower
D. M line becomes narrower
E. Z lines approach one another
F. 2 of the above
G. More than 2
H. All of the above

Answer 22

G. More than 2 (B, C and E correct)

Question 23

The following are characteristic of skeletal muscle except
A. Actin to myosin myofilament ratio is 6:1
B. Centrally located nucleus
C. Neuromuscular junctions
D. Myofibers are myoblastic syncytiums
E. Fibers may exceed 1cm lengths
F. All of the above are characteristics
G. 2 of the above are not
H. More than one of the above not

Answer 23

B. Centrally located nucleus

Question 24

Arrange the following 3 terms (myofiber, myofibril, myofilament) in decreasing order of diameters

Answer 24

Larger - myofiber, myofibril, myofilament - smaller

Question 25

The following are characteristics of skeletal muscle A. Actin myofilaments are directly attached to M line B. Myosin myofilaments are directly attached to Z line C. Myofibers are multinucleated D. All of the above E. None of the above

Answer 25

C. Myofibers are multinucleated

Question 26

The gluteus medius and gluteus minimus can abduct the thigh whereas the gluteus maximus may be antagonistic and can adduct the thigh

Answer 26

True

Question 27

The pectoralis minor and major muscles are antagonistic to one another. If pec major is prime mover in flexion the antagonistic extensor is the pectoral minor

Answer 27

False

Question 28

Extensors of the leg are the quads femoris group. 3 of these muscles v intermedius, v lateralis and v medialis have their insertions on the patellar ligament and their origins on the ischium and femur

Answer 28

False

Question 29

The antagonists to quads femoris are hamstring. These muscles are rectus femoris. Semitendinosus and semimembranosus.

Answer 29

False (biceps femoris, rectus femoris is quads)

Question 30

Which of the following muscles are flexors A. Biceps brachii B. Deltoideus C. External oblique D. Gastrocnemius E. Internal oblique F. Pec major G. Pec minor H. Rectus abdominus I. Rectus femoris J. Semimembranosus K. Soleus

Answer 30

A B C D E F H I J K

Question 31

The deltoid muscle performs which actions

Answer 31

Flexion Extension Abduction

Question 32

Muscle and CT are derived from

Answer 32

Mesoderm

Question 33

Collagenous fibers of a tendon become continuous with

Answer 33

Periosteum of the bone

Question 34

The soleus and gastrocnemius muscles are plantar flexors with common origins and insertions

Answer 34

False

Question 35

The sartorius muscle crosses 2 joints causing flexion at the hip and flexion at the knee

Answer 35

True

Question 36

The triceps brachii crosses the glenohumeral and ulnohumeral joints causing extension of the arm and flexion the forearm

Answer 36

False

Question 37

The common tendon shared by the gastrocnemius and the soleus muscles is the

Answer 37

Calcaneal tendon

Question 38

The contraction of the _ muscles allows the individual to shrug the shoulders

Answer 38

Levator scapulae

Question 39

The paired muscles that form the Linea alba and originate on the tubercles of the pubis around the symphysis are the

Answer 39

Rectus abdominus

Question 40

Which of the following muscles may be classified as adductors

Answer 40

Adductor magnus Gluteus maximus

Question 41

What muscles are extensors

Answer 41

Adductor magnus Biceps femoris Deltoid Pec major Rectus femoris Semimemnranosus Semitendinosus Traps Triceps V intermedius V laterals V medalis

Question 42

Abductors

Answer 42

Deltoid Gluteus medius Gluteus minimus Tensor fasciae Serratus anterior Supraspinatous