Question

1. Not counting the auditory ossicles (tiny bones in the ear), the typical adult human skull consists of how many bones?

	6
	15
	22
	48

2. Which of the following bone marking is considered a type of depression?

	fossa
	foramen
	condyle
	spine

3.

Which of the following bones is unpaired?

	lacrimal bone
	vomer bone
	palatine bone
	nasal bone

4. How many bones contribute to each orbit of the skull?

	3
	5
	7
	9

Answer 1

1)The answer is 22.
The skull or the cranium is made up of 22 bones. Some of these are paired. Of these 22 bones, 8 are the cranial bones and 14 are the facial bones.
The cranial bones are- Two parietal bones, two temporal bones, one ethmoid bone, one frontal bone, one occipital bone, and one sphenoid bone. The facial bones include two inferior nasal conchae, two lacrimal bones, two maxillae, two nasal bones, two palatine bones, two zygomatic bones, one mandible, and one vomer.

2)The answer is fossa
It recieves an articulating bone. Round hole for vessels and nerves are called foramen whereas condyle is a-rounded bump which fits into a fossa on another bone to form a joint.
Spine ,a sharp and pointed processs for muscle attachment.

3)The answer is Vomer bone
The facial skull has fourteen bones in humans. They are of mainly two types- paired and unpaired.
The unpaired bones of the human skull includes frontal, occipital, ethmoid, sphenoid, mandible and vomer.And paired bones include the inferior nasal concha, lacrimal bones, maxilla, nasal bones, palatine bones, and zygomatic bones.

Vomer is an unpaired ,thin plate of bone located in the midline on the floor of the nasal cavity.

4)The answer is 7.

Orbits are symmetrical paired structures and they are separated by nasal cavity and paranasal sinuses.
They include 7-Frontal, sphenoid, maxillary, zygomatic, palatine, ethmoid and lacrimal.