The apical ectodermal ridge
A. forms at the proximal end of each limb bud.
B. plays a role in differentiation and elongation of the limb.
C. ossifies prior to formation of the hand and foot plates.
D. must undergo apoptosis before the limb can develop.
E. secretes mesoderm for muscle formation.
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Question 2) Which is the highest of the three arches of the foot?
A. The transverse arch
B. The medial longitudinal arch
C. The lateral longitudinal arch
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Question 3) This figure shows the bones of the ankle and foot. Which number indicates the lateral cuneiform bone?
A. 2
B. 6
C. 7
D. 8
E. 9
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Question 4) This figure shows the humerus. What is the feature indicated by number 6?
A. Capitulum
B. Trochlea
C. Head
D. Medial condyle
E. Lateral condyle
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Question 5) Upper limb development lags behind lower limb development by about three days.
Indicate whether this statement is true or false.
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Question 6) Which bone does not contribute to the medial longitudinal arch of the foot?
A. Talus
B. Navicular
C. Cuboid
D. Metatarsal I
E. Medial cuneiform
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Question 7) Which bone articulates with all three cuneiform bones?
A. Cuboid
B. Calcaneus
C. Navicular
D. First metatarsal
E. Talus
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Question 8) Which of the following choices accurately describes the crural bones?
A. Both the tibia and fibula are weight-bearing.
B. Only the fibula is weight-bearing.
C. Only the tibia is weight-bearing.
D. Neither the tibia nor fibula are weight-bearing.
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Question 9) Not counting sesamoid bones, what is the total number of tarsals, metatarsals, and phalanges in a single ankle and foot?
A. 24
B. 26
C. 27
D. 30
E. 32
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Question 10) Which tarsal bone articulates with metatarsals IV and V?
A. Talus
B. Calcaneus
C. Lateral cuneiform
D. Cuboid
E. Medial cuneiform
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