15 Questions
Which germ layer gives rise to the notochord?
Mesoderm
What does the ectoderm become during embryonic development?
Neural plate
How many bones make up the structure of the upper extremity?
Thirty
In the upper arm region, which bone is present?
Humerus
In the standard anatomical position, where is the ulna located in relation to the radius?
Medially
What is the distalmost portion of a limb known as?
Extremity
What is the name of the limbs' bony endoskeleton?
Appendicular skeleton
How many symmetrical pairs are the limbs organized into in tetrapods?
Two
What are the cranial pair of limbs known as?
Forelimbs or front legs
In animals with a more erect bipedal posture, what are the forelimbs and hindlimbs often referred to as?
Arms and legs
Which term refers to the distalmost portion of a limb?
Extremity
What is the homologous name for the limbs' bony endoskeleton in tetrapods?
Appendicular skeleton
In tetrapods, how many bilaterally symmetrical pairs of limbs are organized at each end of the torso?
Two
What are the forelimbs and hindlimbs known as in animals with a more erect bipedal posture?
Forelimbs and hindlimbs
What do tetrapods use their limbs for?
Walking, running, jumping, swimming, climbing, grasping, touching, and striking
Test your knowledge of embryology with this quiz on the development of the trilaminar embryonic disc, formation of the notochord, neural plate, and limb buds, and the differentiation of endoderm, mesoderm, and ectoderm. Explore the formation of muscle, bone, blood vessels, and lymphatics from the mesoderm during early embryonic development.
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