Question 1

Which of the following bones is part of the axial skeleton?

Accepted Answer

Sternum

Question 2

At birth, a typical human skeleton has approximately how many bones, and why does this number decrease in adulthood?

Accepted Answer

270 bones, due to fusion of bones during growth

Question 3

Which anatomical feature of a bone is described as a pit or socket, such as a tooth socket?

Accepted Answer

Alveolus

Question 4

A canal-like passage or tunnel in a bone is called a:

Accepted Answer

Canal

Question 5

Which bone marking is a rounded knob that articulates with another bone, such as the occipital condyles of the skull?

Accepted Answer

Condyle

Question 6

Which of the following is a depression found on bones that serves as a groove for a tendon, nerve, or blood vessel?

Accepted Answer

Sulcus

Question 7

What is the function of the paranasal sinuses in the skull?

Accepted Answer

They lighten the skull and add resonance to the voice.

Question 8

Which of the following best describes the difference between an articulated and a disarticulated skeleton?

Accepted Answer

Articulated skeletons are joined together to show spatial relationships; disarticulated skeletons are taken apart to study surface features.

Question 9

Which of the following is NOT a cavity found in the skull?

Accepted Answer

Thoracic cavity

Question 10

Which bone marking is a sharp, slender, or narrow process, such as the mental spines of the mandible?

Accepted Answer

Spine

Question 11

A student is examining a bone and finds a large, rough elevation. Which anatomical feature is this most likely to be?

Accepted Answer

Tuberosity

Question 12

Which of the following is a passageway for nerves and blood vessels through a bone?

Accepted Answer

Foramen

Question 13

If a bone has a smooth, flat, slightly concave or convex articular surface, what is this feature called?

Accepted Answer

Facet

Question 14

Which of the following features is a canal-like passage or tunnel in a bone, such as the external acoustic meatus?

Accepted Answer

Meatus

Question 15

Which bone marking is described as a small pit, such as the fovea capitis of the femur?

Accepted Answer

Fovea

Question 16

Which of the following is a function of the axial skeleton?

Accepted Answer

Forms the central supporting axis of the body

Question 17

Which of the following is a joint surface found on bones?

Accepted Answer

Facet

Question 18

A student is asked to identify a bone marking that is an expanded region superior to a condyle, such as the medial epicondyle of the femur. What is the correct term?

Accepted Answer

Epicondyle

Question 19

Which of the following is a plausible consequence of a fractured hyoid bone?

Accepted Answer

Difficulty in swallowing and evidence of strangulation

Question 20

Which equation best represents the decrease in bone number from birth to adulthood due to fusion? Let $B_{birth}$ be the number of bones at birth, $B_{adult}$ the number in adulthood, and $F$ the number of fusions.

Accepted Answer

$B_{adult} = B_{birth} - F$

The Skeletal System: Structure, Features, and Organization

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