2016 anatomy endterm

Question 1

What is the function of melanin?
a- Absorption of radiation
b- Protects against abrasions
c- Cooling of skin

Answer 1

a- Absorption of radiation

Question 2

Why does cartilage heal slowly following an injury?
a- cartilage cells do not multiply
b- cartilage doesn’t have a blood supply
c- cartilage cells lie in lacunae

Answer 2

b- cartilage doesn’t have a blood supply

Question 3

Which structure is correctly matched to its embryonic origin?
a- Palatine tonsil – second pouch
b- Palatine tonsil – second arch

Answer 3

a- Palatine tonsil – second pouch

Question 4

What type of cells are derived from monocytes?
a- Astrocytes
b- Microglia
c- Oligodendrocytes

Answer 4

b- Microglia

Question 5

What motor nerve supplies the orbicularis oris? 
a- Maxillary               
b- Mandibular         
c- Ophthalmic      
d- Facial

Answer 5

d- Facial

Question 6

What best describes the relationship between the different parts of the brain?
a- Cerebrum is caudal to diencephalon
b- Parietal lobe is caudal to occipital lobe
c- Temporal lobe is inferior to parietal lobe

Answer 6

c- Temporal lobe is inferior to parietal lobe

Question 7

Which fiber carries the information to increase heart rate in a fight-flight situation? 
a-Somatic afferent       
b-Somatic efferent     
c-visceral efferent  
d-visceral afferent

Answer 7

c-visceral efferent

Question 8

What system interconnects Haversian system? 
a- Volkman canal     
b-Canalculi     
c- Trabeculae      
d- Osteon canal

Answer 8

a- Volkman canal

Question 9

A girl came to the clinic with neck mass deep to the SCM and below the angle of the mandible while holding the mass gently and the skin of the girl to protrude the tongue, the mass did not move. What is the diagnosis?
a- thyroid nodule
b- thyroglossal cyst
c- brachial cyst

Answer 9

c-brachial cyst

Question 10

What is the function of the parasympathetic system?
a- increased heart rate
b- pupil constriction

Answer 10

b- pupil constriction

Question 11

What does nissel body represents?
a- mitochondria
b- nucleus
c- rough endoplasmic reticulum

Answer 11

c- rough endoplasmic reticulum

Question 12

Which nerve lesion paralyzes the superior orbital muscle?
a- Abducent
b- Facial
C- Trochlear

Answer 12

C- Trochlear

Question 13

What best describes smooth muscle cells?
a- it is branched
b- it is striated
c- spindle shaped cell

Answer 13

c- spindle shaped cell

Question 14

Which muscle does investing deep cervical fascia enclose?
a- digastric
b-platysma
c- trapezius

Answer 14

c- trapezius

Question 15

What structure returns cerebrospinal fluid to the venous system?
a- Archanoid villi
b- Choroid plexus
c- Apertures in the 4th ventricle

Answer 15

a- Archanoid villi

Question 16

What glial cell responsible for Neurotransmitter recycling?
a- microglia
b- astrocyte

Answer 16

b- astrocyte

Question 17

What is the prime mover muscle in elbow extension?
a- biceps brachii
b- brachialis
c- triceps brachii

Answer 17

c- triceps brachii

Question 18

What parasympathetic cranial nerve innervates the thoracic viscera?
a- vagus
b- trochlear
c- trigeminal

Answer 18

a- vagus

Question 19

What surrounds the medullary cavity?
a- spongy bone
b- compact bone

Answer 19

a- spongy bone

Question 20

Which vessel can be found in posterior to the SCM?
a- EJV
b-AJV
b-IJV

Answer 20

a- EJV

Question 21

Which one is the function of T-tubules?
a- Contraction
b- Conductivity of electrical signals

Answer 21

b- Conductivity of electrical signals

Question 22

Which of these cranial nerve has both motor and sensory fibers ?
a- abducent
b- trigeminal
c- optic

Answer 22

b- trigeminal

Question 23

What are the phagocytic cells in the epidermis ?
a-Merckel
b-Melanocytes
c- Langerhan

Answer 23

c- Langerhan

Question 24

What forms the epiphyseal growth plate?
a- compact bone
b- hyaline cartilage
c- fibrocartilage

Answer 24

b- hyaline cartilage

Question 25

The jugular foreman narrows due to abnormal bone growth resulting in difficulty in swelling and voice. Which nerve is affected? a- vagus nerve b- optic nerve c- abducent

Answer 25

a- vagus nerve

Question 26

an infected woman presents abscess confined to the suprasternal space. between which two layers is the abscess? a- between pretracheal visceral layer and investing layer b- between pretracheal muscular layer and the investing layer

Answer 26

b- between pretracheal muscular layer and the investing layer

Question 27

A man gets injured at the lower part of his neck, he shows shortness in his breath. Which structure was injured? a- phrenic nerve b- vagus nerve c-great auricular

Answer 27

a- phrenic nerve

Question 28

Which method of bone formation does not include a cartilage template? a- endochondral b- intramembranous

Answer 28

b- intramembranous

Question 29

``` Presynaptic neurons of sympathetic nerves are located in? a- ventral horn b- dorsal horn c- lateral horn d- dorsal root ganglia ```

Answer 29

c- lateral horn