A&P 1 CH 8 review questions

Which distal feature(s) of the humerus articulate with the proximal head of the radius? 1 capitulum; 2 radial fossa; 3 trochlea

1 & 2

Which bones form the acetabulum? 1 ilium; 2 ischium; 3 pubis

1, 2, & 3

The distal end of the radius articulates with which three bones of the wrist? 1 lunate; 2 capitate; 3 scaphoid; 4 triquetrum; 5 hamate

1, 3, & 4

The superior and inferior regions of the bony pelvis are separated by a series of landmarks that indicate a boundary known as the pelvic brim (pelvic inlet). These landmarks are the sacral promontory, the __________ of each ilium, and along the superior edges of each pubic bone, and the pubic symphysis.

Arcuate lines

While the transverse arch of the foot involves several tarsals and the bases of the metacarpals, which statement is correct about the longitudinal arch?

Both the medial and lateral parts of the arch begin at the calcaneus

In which week of embryonic development have upper and lower limb buds become developed enough to be called free upper and lower limbs?

By the 8th week

By what week of development does endochondral ossification of the bones of the limbs begin?

By the end of the 8th week

Somites are cube-shaped masses of mesoderm that give rise to the limb buds of the embryo.

False

The acromion is a flattened process, which articulates with the humerus.

False

The bones of the foot are held in place by tendons and ligaments and form two arches: the transverse and lateral arches. These arches are rigid, and by the time a child is 12 or 13, they are fully formed and inflexible. This rigidity enables us to walk with greater ease.

False

The bones of the skull develop from mesenchymal cells of the mesoderm.

False

The distal phalanges articulate with the metacarpals and the proximal phalanges.

False

The fibula only articulates with the femur at its proximal end.

False

The greater sciatic notch is a feature of the ischium which allows passage of the sciatic nerve, the longest nerve of the body, through to the leg.

False

The medial and lateral epicondyles are features of the ulna which serve as attachment sites for muscles of the forearm.

False

The pectoral girdles attach the upper limbs to the axial skeleton and consist of two clavicles, two scapulae, and the manubrium.

False

The radial groove is a feature of the radius, while the deltoid tuberosity is a roughened area found on the ulna.

False

The fovea captitis is a feature of which bone of the lower limb?

Femur

The medial and lateral condyles are distal features of which bone of the lower limb?

Femur

Which of the following is the correct sequence of bones of the lower limb, from proximal to distal ends?

Femur, patella, tibia and fibula, tarsals, metatarsals, & phalanges

The longest and largest bone of the upper limb is the _______.

Humerus

Which of the following is the correct sequence of bones of the upper limb, from proximal to distal ends?

Humerus, radius and ulna, carpals, metacarpals, & phalanges

Which finger has just two bones rather than three?

I

Which of the following bones is the largest of the three bones that make up the hip bone?

Ilium

You are given a case study to work on in the laboratory. You are given two different bony pelves to examine. You are told one is female and one is male. Your group notices that one of the pelves has a wide greater sciatic notch (nearly 90˚), and that the angle of the pubic arch is greater than 90˚. What does your group conclude about this pelvis?

It is a female pelvis

The clavicle articulates with which of the following structures to form the sternoclavicular joint?

Manubrium

Which joint consists of a fibrocartilage pad that joins the two pubic bones anteriorly?

Pubic symphysis

In the pelvic girdle, the two hip bones unite posteriorly with the sacrum to form the _______ joint.

Sacroiliac

Which of the following bones of the wrist is more likely to be fractured when a person puts out their hand to break their fall?

Scaphoid

Which of the following bones articulate at the glenohumeral joint?

Scapula and humerus

The head of the femur articulates with what feature of the hip bones to form the hip (coxal) joint?

The acetabulum

Which of the following is not a true statement regarding the male and female pelves?

The female pelvic inlet is heart- shaped and smaller than that of the male, which is larger and more oval

The obturator foramen is the largest foramen in the body, but is nearly completely closed by the obturator membrane (but nerves and blood vessels are still able to pass through). This foramen is formed by which structures of the pelvic girdle?

The ischium and pubis

Most people can see and feel the bony prominences on the medial and lateral sides of the ankles. What bone features and bones form these two prominences?

The medial malleolus of the tibia, and the lateral malleolus of the fibula

The embryonic skull begins developing during the fourth week after fertilization. Which part of these embryonic connective tissues will eventually form the facial bones?

The membranous viscerocranium

Which of the following is the correct term for the knee joint?

Tibiofemoral joint

A broad, flat sheet of connective tissue called an interosseous membrane connects the bones of the forearm (radius and ulna).

True

At birth, each hip bone is composed of three separate bones which aren't completely fused until the person is in their early 20's.

True

In the embryo, both upper and lower limb buds have appeared before the beginning of the fifth week of development.

True

Nearly all the differences between the female and male pelves are adaptations of the female pelvis to accommodate childbirth.

True

Of the bones of the lower leg, only the tibia is an actual weight-bearing bone.

True

The articular facets of the patella articulate with the medial and lateral condyles of the femur.

True

The coracoid process of the scapula does not articulate with any bone, but it is an attachment site for tendons and ligaments.

True

The fibula is often used to provide bone for a bone graft to replace missing bone in another part of the body. Use of the fibula will not interfere with walking or even running, because it is not a weight-bearing bone.

True

The medial end of the clavicle is called the sternal end.

True