This set of Human Anatomy Multiple Choice Questions & Answers (MCQs) focuses on “Osteology – Thorax & Skull”.
1. What is the number of true, false and floating ribs in man?
a) 6, 2, 3
b) 7, 2, 4
c) 6, 3, 4
d) 7, 3, 2
View Answer
Explanation: True ribs=7pairs, False ribs=3pairs, Floating ribs = 2 pairs.
2. Which ribs have “buckle handle” type of movements?
a) Rib no 1-2
b) Rib no 3-5
c) Rib no 6-10
d) Rib no 11-12
View Answer
Explanation: Bucket-handle is a movement of ribs that results in a change in transverse diameter of the thorax. It helps inspiration and expiration.
3. Which of the following is a breast bone?
a) Scapula
b) Ribs
c) Sternum
d) Clavicle
View Answer
Explanation: The sternum or breastbone is a long flat bone shaped like a necktie located in the center of the chest. It helps to protect the heart, lungs and major blood vessels from injury.
4. Scapula is a large triangular flat bone situated in the dorsal part of the thorax between _______
a) The second and fifth ribs
b) The second and seventh ribs
c) The third and seventh ribs
d) The fourth and seventh ribs
View Answer
Explanation: Scapula is a flat and triangular bone present at the back of shoulder as shoulder blade. Scapula is produced into scapular spine which ends into a triangular acromian process.
5. Name the upper handle like part found in sternum?
a) Xiphoid cartilage
b) Manubrium
c) Body
d) Facet
View Answer
Explanation: Manubrium is the upper handle like part found in sternum. Lower small cartilaginous plate is called Xiphoid cartilage.
6. Which of the following disease is associated with ribs?
a) Synovitis
b) Bursitis
c) Rickets
d) Berri Berri
View Answer
Explanation: It is caused due to deficiency of vitamin D and calcium in the bones. The ribs affected are the second to the eighth. In rickets, the ends of the ribs, where they join the costal cartilages, become enlarged, giving rise to the so-called “rickety rosary,” which in mild cases is only found on the internal surface of the thorax.
7. Which part of human skeleton forms the helmet for the protection of human brain?
a) Temporal bone
b) Hyoid
c) Mandible
d) Cranium
View Answer
Explanation: Cranium (brain box). It is the large and hollow part of the skull which encloses and protects the brain in the cranial cavity.
8. Human Cranium has ________ bones.
a) 12
b) 7
c) 8
d) 9
View Answer
Explanation: There are 8 bones that forms the cranium. The ethmoid bone, the sphenoid bone, the frontal bone, occipital bone, two parietal bone and two temporal bones.
9. Name of the tongue bone is ____________
a) Frontal bone
b) Zygomatic bone
c) Hyoid bone
d) Mandible
View Answer
Explanation: It is a horse shoe shaped which supports tongue. It also supports the throat and provides surface for attachment of tongue muscle.
10. Man has dicondylic skull with craniostylic jaw suspension.
a) True
b) False
View Answer
Explanation: The skull which is attached to the body two articulatory condyles is known as dicondylic. In craniostylic jaw suspension upper jaw fuses throughout its length with the cranium. Hyomandibular forms the ear ossicles malleus and incus two dermal bones dentary of lower jaw and squamosal of skull provide the articulation between jaws.
11. Through which apparatus brain is continuous with spinal cord?
a) Palatines
b) Foramen magnam
c) Cranial cavity
d) Foramen maxilla
View Answer
Explanation: Foramen magnam is the largest cranial foramen lying in occipital part of the skull. Brain continues the spinal cord through this foramen.
12. How many bones are present in a human skull?
a) 30
b) 28
c) 29
d) 31
View Answer
Explanation: There are 29 bones. Cranium=8 Face=14 Ear ossicles=6 Hyoid=1.
13. Ear occicle incus is modified form of ________
a) Jugal bone
b) Quadrate bone
c) Articular bone
d) Hyomandibular bone
View Answer
Explanation: It is a squarish bone with which the jaw articulates. It is a cartilage bone at the back end of upper jaw in the majority of vertebrates. In mammals, it becomes the incus of the ear but in most other vertebrates forms the articulation of the lower jaw.
Sanfoundry Global Education & Learning Series – Human Anatomy and Physiology.
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