1. Which part of human skeleton forms the helmet for the protection of human brain?
a) Temporal bone
b) Hyoid
c) Mandible
d) Cranium
Explanation: Cranium (brain box). It is the large and hollow part of the skull which encloses and protects the brain in the cranial cavity.
2. Human Cranium has ________ bones.
a) 12
b) 7
c) 8
d) 9
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
3. Name of the tongue bone is ____________
a) Frontal bone
b) Zygomatic bone
c) Hyoid bone
d) Mandible
Explanation: It is a horse shoe shaped which supports tongue. It also supports the throat and provides surface for attachment of tongue muscle
4. Man has dicondylic skull with craniostylic jaw suspension.
a) True
b) False
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.
5. Through which apparatus brain is continuous with spinal cord?
a) Palatines
b) Foramen magnam
c) Cranial cavity
d) Foramen maxilla
Explanation: Foramen magnam is the largest cranial foramen lying in occipital part of the skull. Brain continues the spinal cord through this foramen.
6. How many bones are present in a human skull?
a) 30
b) 28
c) 29
d) 31
Explanation: There are 29 bones. Cranium=8 Face=14 Ear ossicles=6 Hyoid=1.
7. Ear occicle incus is modified form of ________
a) Jugal bone
b) Quadrate bone
c) Articular bone
d) Hyomandibular bone
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.
8. Which of the following bone is called collar bone?
a) Acetabulum
b) Pelvic
c) Scapula
d) Clavicle
Explanation: Clavicle bone is a narrow rod like S shaped bone extending between sternum and acromion process of scapula bone. The clavicle forms the anterior portion of the shoulder girdle.
9. Glenoid cavity is found in _________
a) Pelvic girdle
b) Pectoral girdle
c) Sternum
d) Humerous
Explanation: Pectoral girdle also known as shoulder girdles. At the junction of clavicle and scapula there is cup like depression called glenoid cavity, in which the head of the humerus fits in and forms shoulder joint.
10. Name of the shoulder bone is _________
a) Acetabulum
b) Pelvic
c) Scapula
d) Clavicle
Explanation: The scapula forms the posterior part of the shoulder girdle. It is a flat, triangular bone, with two surfaces, three borders, and three angles