Textbook Questions

Question 1

on what basis is skeleton grouped into axial and appendicular division?

Answer 1

1. axial skeleton consist of bones that lie around longitudinal axis of human body
2. appendicular skeleton consist of bones of teh upper and lower limbs extremities/appendages pplus bones forming the girldles that connect the lims to acial skeleton

Question 2

what are surface markings?

Answer 2

structural features adapted for specific functions. two major;

1. depressions and openings: allow passage of soft tissues (blood vessels, ligs, nerves and tendons) or form joints
2. processes: projections or outgrowths that help form jointts / serve as muscle att. pts. for connective tissue (eg. ligs/tendons)

Question 3

name cranial and facial bones and indicate whether they are paired or single

Answer 3

Question 4

describe special features of skull: sutures, paranasal sinuses and fontanels

Answer 4

1. sutures
2. paranasal sinuses: muscuos membranse lined cavities with certain skulol bones

Question 5

what strudtures pass through supraorbital foramen?

Answer 5

supraorbital nerve and artery

Question 6

how do parietal bones relate to teh cranial cavity?

Answer 6

Parietal bones form the greater portion of the sides and roof of cranial cavity.

The internal surfaces of parietal bones contain many protusions and depressions that accomodate the blood vessels supplying dura mater, the superficial connective tissue covering brain

Question 7

what structures form zygomatic arch?

Answer 7

the zygomatic arch is formed by the zygomatic process of the temporal bone and the temporal process opf zygomatic bone

Question 8

what structures pass through teh hypoglossal canal

Question 9

why is sphenoid called keystone of cranial floor?

Answer 9

sphenoid is keystoen of cranial floor bc it art. w/ all the other cranial bones holding them together

Question 10

teh ethmoid bone forms which other structure?

Answer 10

1. part of the anterior portion of cranial floor
2. medial wall of orbit
3. the superior portion of teh nasal septum, partition that divides nasasl cavity to right and left sides

Question 11

which bones form nasal septum?

Answer 11

1. the vomer
2. septal cartilage
3. perpendicular plate of ethmoid bone