7. The Skeletal System

The only moveable bone in the adult skull is the:

a. Maxilla

b. Lacrimal bone

c. Mandible

d. Frontal bone

Blood vessels that drain blood from the head pass through the:

(a) Jugular foramina

(b) Hypoglossal canals

(c) Stylomastoid foramina

(d) Mental foramina

(e) Lateral canals

The structure(s) that divide the nasal cavity into right and left sides is/are the:

a. Nasal bones

b. Perpendicular plate of the ethmoid bone

c. Vomer

d. Both a and b are correct

e. Both b and c are correct

Which bone creates the lateral wall of the orbital cavity?

What facial bone forms the chin? The cheekbone? The upper jaw? The bony eyebrow ridges?

The boundaries between skull bones are immovable joints called:

(a) Foramina

(b) Fontanelles

(c) Lacunae

(d) Sutures

Which of the following bones is both classified as a facial bone and also contains a sinus?

The two parietal bones are united at the_______suture; they meet the frontal bone at the_____ suture, the temporal bones at the______ sutures, and the occipital bone at the_____suture.

The joint between the frontal and parietal bones is correctly called the ____ suture.

(a) Parietal

(b) Lambdoid

(c) Squamous

(d) Coronal

Name two ways in which the fetal skull differs from the adult skull. A certain short-day plant flowers only when days are less than 12 hours long. Which of the following would cause it to flower?

a. A 9-hour night and 15-hour day with 1 minute of darkness after 7 hours

b. An 8-hour day and 16-hour night with a flash of white light after 8 hours

c. A 13-hour night and 11-hour day with 1 minute of darkness after 6 hours

d. A 12-hour day and 12-hour night with a flash of red light after 6 hours