Download Answer Key: What Did You Learn

CHAPTER EIGHT
Answers to WHAT DID YOU LEARN?
1.
The pectoral girdle consists of two components: the clavicle and the scapula.
2.
The intertubercular groove is a depression between the greater and lesser
tubercles of the humerus that contains the biceps brachii tendon.
3.
The trochlear notch of the ulna articulates with the trochlea of the humerus.
4.
The proximal end of the radius has a disc-shaped head that articulates with the
capitulum of the humerus and the radial notch of the ulna.
5.
Each os coxae forms through the fusion of an ilium, an ischium, and a pubis.
6.
The pelvic inlet is the superior opening enclosed by the pelvic brim. The pelvic
outlet is the inferior opening bounded by the coccyx, the ischial tuberosities, and
the inferior border of the pubic symphysis.
7.
The interosseous membrane extends between the interosseous borders of the tibia and
fibula. This membrane helps stabilize the positions of the two bones and provides
additional surface area for muscle attachment.
8.
The seven tarsal bones are the calcaneus, talus, navicular, three cuneiform bones
(medial cuneiform, intermediate cuneiform, and lateral cuneiform), and the
cuboid. The talus articulates with the leg, while the three cuneiform bones and
the cuboid bones articulate with the metatarsals of the foot.
9.
The apical ectodermal ridge signals the underlying tissue to grow and differentiate
into the components of the limb.
10.
Separate fingers and toes are formed by the end of week 8.