Ch.8 Appendicular Skeleton por Neil

In anatomical position, which forearm bone is located laterally?

Radius is on the lateral side of the forearm.

What is the medial side of the hand?

5th metacarpal

In males, what changes in the skeleton occur at puberty? In females?

The skeleton in males becomes more robust at puberty. In females, the pelvis broadens.

Match Description/ Bone 1. articulates with the acetabulum and the tibia 2. its malleolus forms the lateral aspect of the ankle 3. bone that articulates with the hand and wrist 4. the wrist bones 5. bone shaped much like a monkey wrench 6. articulates with the capitulum of the humerus 7. largest bone is the calcaneus

1. Femur 2 Fibula 3 Radius 4. Carpals 5. Ulna 6. Radius 7. Tarsals

Which bones have a styloid process?

1. Radius 2. Ulna 3. Fibula

Match Description/Bone 1. Bone of the axial skeleton to which the pectoral girdle attaches 2. its features include the glenoid cavity and acromion process 3. its features include the ala, crest, and greater sciatic notch 4. membrane bone that transmits forces from upper limb to bony thorax 5. bone of pelvic girdle that articulates with the axial skeleton. 6. bone that bears weight during sitting 7. most anteroinferior bone of the pelvic girdle 8. bone of the axial skeleton to which the pelvic girdle attaches.

1. Sternum 2. Scapula 3. Ilium 4. Clavicle 5 Ilium 6 Ischium 7 Pubis 8 Sacrum

Name the three fossae of the scapula, and describe their location.

1. Supraspinous fossa; above the scapula spine. 2. Infraspinous fossa; below the scapula spine. 3. Subscapular fossa; beneath the scapula on its anterior surface.

Identify the bone each feature is located on and Identify the bone that each articulates with: 1. capitulum 2. trochlear notch 3. head of the ulna 4. radial notch

1. capitulum - Humerus; articulates with the head of the radius. 2. trochlear notch - Ulna; articulates with the trochlea of the humerus. 3. head of the ulna - Ulna; articulates with the ulna notch of the radius 4. radial notch - Ulna; articulates with the head of the radius.

Match Feature/Bone 1. lateral malleolus 2. linea aspera 3. lesser trochanter 4. fibular notch 5. talar shelf 6. tibeal tuberosity

1. lateral malleolus - fibula 2. linea aspera - femur 3. lesser trochanter - femur 4. fibular notch - tiba 5. talar shelf - calcaneus 6. tibial tuberosity - tibia

Which part of the scapula articulates with the clavicle?

Acromion of the scapula articulates with the clavicle.

What is the keystone of the medial longitudinal arch of the foot? How do the arches of the foot distribute body weight?

Anterior portion of the talus is the keystone of the medial longitudinal arch. The arches distribute weight anteriorly to the heads of the metatarsals(ball of the foot) and posteriorly to the calcaneous (heel).

Obturator Foramen - Bone and Location

Coxal bone; between Ischium and Pubis.

The greater and lesser tubercles are located on the _____.

Humerus

When you place your hands on your "hips," what structure are you resting your hands upon?

Iliac crests

In the forearm, the radius is the _____ bone; therefore, the radial notch of the ulna points _____.

In the forearm, the radius is the LATERAL bone; therefore, the radial notch of the ulna points LATERALLY.

Name all the bones of the appendicular skeleton that have a tuberosity.

Ischial, Gluteal, Tibial, Radial, Deltoid

What specific feature of the hip bone articulates with the head of the femur?

The acetabulum of the hip bone articulates with the head of the femur.

What is the difference between the anatomical neck and the surgical neck of the humerus?

The anatomical neck of the humerus is just inferior to the head; it is the area where the diaphysis joins with the proximal epiphysis. The surgical neck, the most frequently fractured region of the humerus is inferior to the greater and lesser tubercles.

What structures form the two bony "bumps" on either side of your ankle?

The bony bumps on either side of your ankle are formed by the medial malleolus of the tibia and the lateral malleolus of the fibula.

How is the pectoral girdle attached to the axial skeleton?

The clavicle joining with the sternum and rib.

The acromion, greater tubercle, glenoid cavity, and the anatomical neck of humerus is NEAR or IN the shoulder joint. What is not?

The deltoid tuberosity is not near or in the shoulder joint..

Name the specific part of the hip bone that bears your weight when you sit.

The ischial tuberosities carry your weight when you sit, lil' homie.

The lateral malleolus is the _____ portion of the fibula

The lateral malleolus is the DISTAL portion of the fibula

Name the bones that are located in the palm of the hand.

The metacarpals are located in the palm of the hand.

How does the structure of the pubic arch, the greater sciatic notch, and the sacrum differ between males and females?

The pubic arch is greater in females than in males; the greater sciatic notch is wider and more shallow in females than in males; and the sacrum is wider, shorter, and more curved in females.

What is the most anterior bone of the pelvic girdle?

The pubis is the most anterior bone of the pelvic girdle.

The acetabulum, greater trochanter, and neck of femur is NEAR or IN the hip joint. What is not?

The sacral promontory is not in or near the hip joint.

The scaphoid and lunate articulate with the _____.

The scaphoid and lunate articulate with the radius.

Considering what you know about how the hip bones form, why can hip dysplasia be successfully treated by splinting if applied earlier?

The three bones of the hip fuse together during childhood at the acetabulum. Splinting holds the femoral head in place so the acetabulum and surrounding ligaments can form normally.

Which of the bones listed does not have head? 1. radius 2. femur 3. ulna 4. tibia 5. fibula

Tibia does not have a head.