Chapter 7: The Skeletal System: Appendicular Division

Which of the following is true of the bony matrix of the skeleton as people age:

Its mineral content diminishes as a normal part of aging

The ulnar nerve crosses the posterior surface of the ____________ of the humerus:

Medial epicondyle

The palms of the hand are supported by the:

Metacarpal bones

The surgical neck of the humerus corresponds to (the):

Metaphysis of the bone

Compared with the pectoral girdle, the pelvic girdle is:

More robust, adapted for weight bearing and locomotion

Which of the following is a structure of the ulna:

Olecranon

On the humerous, the olecranon process of the ulna projects into the __________ when the arm is extended:

Olecranon fossa

The point of the elbow is formed by the_____________ of the ulna:

Olecranon process

The bony edge of the lesser pelvis is called the:

Pelvic brim

Compared with that of females, the male coccyx:

Points anteriorly

The fibula:

Provides stability to the ankle; it is lateral and does not bear any weight. It doesn't make up the knee joint.

The proximal radioulnar joint permits medial or later rotation of the

Radial head

On the scapula, the acromion is continuous with the:

Scapular spine

The only point of direct connection between the pectoral girdle and the axial skeleton is (the):

Sternal end of the clavicle

Which of the following sports injuries, common in women, results from repetitive forces on the bone during running or jumping:

Stress fracture

At the distal end of the radius, the ___________ on the lateral surface stabilizes the joint.

Styloid process

A roughened projection on the posterolateral border of the os coxae is called the ischial tuberosity:

TRUE

The coronoid process forms the inferior lip of the trochlear notch:

TRUE

The depression in the head of the femur where a stabilizing ligament attaches is called the fovea capitis

TRUE

The second largest bone in the foot is the:

Talus

The age of a skeleton can be determined from:

The degree of ossification of cranial sutures

Which of the following pieces of information about an individual can be discerned from the skeleton:

1. Age (size and epiphyseal plate) 2. sex (size, ex: pelvis) 3. race( more controversial but possible) 4. Body size

Fusion of the epiphyseal cartilages begins at about age:

3 years

There are ___________ phalanges in the appendicular skeleton:

56; 14 on each hand and foot

Characteristics that specifically identify a skeletal element as belonging to a female include:

A bone with smaller prominences and a smoother surface

Which of the following is a large, posterior process that projects from the lateral end of the scapular spine:

Acromion

Which structure is found immediately superior to the inferior iliac notch:

Anterior inferior iliac spine

The pectoral girdle, upper limb bones, pelvic girdle, and lower limb bones make up the:

Appendicular Skeleton

In the ankle, the largest tarsal bone is the:

Calcaneous

When one stands normally, the body weight is distributed evenly between the_________ and the distal ends of the metatarsals:

Calcaneus

The _______________ of the humerus articulates with the radius:

Capitulum

The head of the radius articulates with the:

Capitulum

The depression on the distal end of the anterior humerus is (the):

Coronoid fossa

The last two metatarsals articulate with the

Cuboid

A depression on the posterior side of the humerus is called the coronoid fossa:

FALSE; its on the anterior side

The pubic angle tends to be greater than 100 degrees in males:

FALSE; less than 90

The longest, heaviest bone in the body is the:

Femur

The distal tip of the fibula

Forms the lateral malleolus

The capitulum is a part of the:

Humerus

The largest bone of the pelvic girdle is the:

Ilium

Differences between a young child's skeleton and that of a small adult include which of the following:

In the child's skeleton, a frontal suture is present until age 2-8

The bones of the pelvis _______________:

Include both axial and appendicular elements

The lateral and medial condyles of the tibia are separated by the:

Intercondylar eminence

The space between the greater and lesser tubercles of the humerus is called the:

Intertubercular sulcus

The patella:

Is a sesamoid bone

When seated, the body weight is borne by the:

Ischial tuberosities; you sit on your ischium

Which event occurs first as an individual grows and ages:

The ossification centers of the occipital bone fuse

The crural interosseous membrane extends between the

Tibia and fibula; crural means pertaining to the leg

The medial condyle of the femur articulates with the:

Tibial medial condyle

Which of the following is the lateral bone of the distal row and forms a proximal articulation with the scaphoid:

Trapezium

The groove in the proximal epiphysis on the anterior surface of the ulna that receives the humerus is called the:

Trochlear notch

The connection between the humerus and the scapula is called the:

glenohumeral joint

The large process of the femur that projects laterally from the junction of the neck and shaft is the:

greater trochanter

In the hip bones, the pubic and ischial rami encircle the:

obturator foramen

The head of the femur articulates with the acetabulum of the:

os coxae

In a "dancer's fracture," which of the following is broken:

proximal portion of the 5th metatarsal; typically occurs when the dancer's foot is plantar flexed, "pointed toes"

Closure of the fontanels is typically complete around the age of:

two years