Human Anatomy and Physiology : Bones

Study concepts, example questions & explanations for Human Anatomy and Physiology

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Example Questions

Example Question #43 : Identifying Bones Of The Upper Extremities

Which are the most distal bones of the upper limb?

Possible Answers:

radius

ulna

phalanges

humerus

Correct answer:

phalanges

Explanation:

Phalanges, the digits of the hand, are the most distal bones of the upper limb.

The humerus is the bone of the upper arm. The ulna is the bone of the medial side of the forearm. The radius is the bone of the lateral side of the forearm. These bones are all proximal to the phalanges.

Example Question #42 : Identifying Bones Of The Upper Extremities

Arrange the following bones in order from most proximal to most distal: humerus, phalanges, radius, and ulna.

Possible Answers:

phalanges, humerus, radius, ulna

humerus, ulna, radius, phalanges

phalanges, ulna, radius, humerus

ulna, humerus, radius, phalanges

Correct answer:

humerus, ulna, radius, phalanges

Explanation:

The humerus is the bone of the upper arm and is most proximal of these four bones; it articulates proximally with the scapula and distally with the radius and ulna. The ulna is the bone of the medial side of the forearm; it articulates proximally with the humerus and radius and distally with the radius. The radius is the bone of the lateral side of the forearm and crosses the ulna during pronation. Phalanges, the digits of the hand, are the most distal bones of the upper limb.

Example Question #43 : Identifying Bones Of The Upper Extremities

Which of the following articulates proximally with the scapula and distally with the radius and ulna?

Possible Answers:

humerus

tibia

phalanges

clavicle

Correct answer:

humerus

Explanation:

The humerus is the bone of the upper arm; it articulates proximally with the scapula and distally with the radius and ulna. The ulna is the bone of the medial side of the forearm; it articulates proximally with the humerus and radius and distally with the radius. The radius is the bone of the lateral side of the forearm and crosses the ulna during pronation.

Phalanges, the digits of the hand, are the most distal bones of the upper limb. The clavicle is an S-shaped bone located between the sternum and the scapula.

The tibia is located in the lower limb.

Example Question #44 : Identifying Bones Of The Upper Extremities

Arrange the following bones in order from most distal to most proximal: carpals, humerus, metacarpals, phalanges, and radius (they appear here in alphabetical order).

Possible Answers:

phalanges, carpals, metacarpals, radius, humerus

phalanges, humerus, metacarpals, radius, carpals

phalanges, metacarpals, carpals, radius, humerus

carpals, metacarpals, humerus, radius, phalanges

Correct answer:

phalanges, metacarpals, carpals, radius, humerus

Explanation:

Phalanges, the digits of the hand, are the most distal bones of the upper limb. They articulate with the metacarpals, the bones of the hand, which in turn articulate with one of two rows of carpals, the bones of the wrist. Next is the radius, the bone of the lateral side of the forearm, which articulates with the humerus, the bone of the upper arm, which articulates proximally with the scapula and distally with the radius and ulna.

Example Question #47 : Identifying Bones Of The Upper Extremities

The head of the humerus articulates proximally with which of the following?

Possible Answers:

ulna

radius

carpals

scapula

Correct answer:

scapula

Explanation:

The head of the humerus articulates proximally with the scapula at the glenoid fossa. It articulates distally with the radius and ulna. The carpals are the bones of the wrist; they do not articulate with the humerus.

Example Question #48 : Identifying Bones Of The Upper Extremities

Which bones make up the wrist?

Possible Answers:

carpals

metatarsals

metacarpals

tarsals

Correct answer:

carpals

Explanation:

The carpals make up the wrist. The metacarpals make up the body of the hand. The tarsals and metatarsals make up the ankle and the body of the foot, respectively. 

Example Question #49 : Identifying Bones Of The Upper Extremities

Which bones make up the hand?

Possible Answers:

carpals

metatarsals

tarsals

metacarpals

Correct answer:

metacarpals

Explanation:

The metacarpals make up the body of the hand. The carpals make up the wrist. The tarsals and metatarsals make up the ankle and the body of the foot, respectively. 

Example Question #1 : Identifying Bones Of The Skull

The crista galli is a part of which skull bone?

Possible Answers:

Ethmoid bone

Temporal bone

Sphenoid bone

Frontal bone

Correct answer:

Ethmoid bone

Explanation:

The crista galli is the part of the ethmoid bone that is a point of attachment for the meninges of the brain. The crista galli is the most superior point on the ethmoid.

Example Question #2 : Identifying Bones Of The Skull

Which of the following bones does not contain a sinus?

Possible Answers:

Frontal bone

Temporal bone

Sphenoid bone

Maxillary bone

Correct answer:

Temporal bone

Explanation:

There are four paranasal sinuses in the head: the frontal, maxillary, sphenoid, and ethmoid sinuses. They function in lightening the skull, and creating mucous for the nasal cavity. The temporal bone does not contain a sinus.

Example Question #2 : Identifying Bones Of The Skull

Which facial bone is responsible for the formation of the lateral wall of the orbitals?

Possible Answers:

Nasal bones

Maxillary bones

Palatine bones

Lacrimal bones

Zygomatic bones

Correct answer:

Zygomatic bones

Explanation:

While many bones are responsible for the formation of the orbit, it is the zygomatic bones that make up the lateral portion of the orbitals. You can remember this by keeping in mind that the zygomatic bones are also called the cheek bones, and are on the lateral sides of your face.

The frontal bone forms the superior region of the orbital, and the lacrimal bone forms the medial border. The maxillary and zygomatic bones each form part of the inferior border, with the zygomatic bone extending into the lateral border. The sphenoid and ethmoid bones both form the posterior wall, with the sphenoid region lateral to the ethmoid region.

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