Achondroplasia, the most common cause of dwarfism, results from a mutation in the Wnt7 receptor.

Type I alveolar epithelial cells (type I pneumocytes) are responsible for gas exchange and develop from endoderm.

Redirecting unfavorable behaviors requires the leader to change behavior and make it functional. Which one of the following leadership decisions would not be appropriate? 

The cardiovascular system is the first organ system to reach a functional state.

Which of the following is a derivative of the midgut?

During what stage of lung development does surfactant begin being produced?

What part of the somite is indicated by the tip of the arrow?

Hairs begin as solid proliferations from the stratum germinativum of the epidermis.

The lower limb rotates approximately 90 degrees medially, placing the extensor muscles on the anterior surface and the dig toe medially.

The indicated location is a site of fusion of the embryonic ectoderm and endoderm.