The inner layer of the exoskeleton (外骨骼) of an arthropod is called the ________. It contains chitin (几丁质), and its outer region is hardened. The outermost layer of the exoskeleton is waxy and impermeable to water.
A: epicuticle (上表皮)
B: procuticle (原表皮)
C: hypodermis (真皮)
D: basement membrane (基膜)
A: epicuticle (上表皮)
B: procuticle (原表皮)
C: hypodermis (真皮)
D: basement membrane (基膜)
举一反三
- What are the correct descriptions of periosteum?() A: The outer layer consists of dense connective tissue B: The inner layer contains bone progenitor cells C: Formation of perforating fibers into bone D: Participate in the repair of bone damage E: Covered on the inner and outer surface of bone
- From inside to outside, The second layer is A: internal limiting membrane B: inner plexiform layer C: nerve fiber layer D: ganglion cell layer
- Earth's outermost layer, consisting of the crust and upper mantle, is called the lithosphere.
- The basal layer of the outermost layer of the skin contains special cells called_________(注意写复数形式). The black pigment can give color to the skin.
- What is the outermost layer of the GI tract called? A: Mucosa B: Sub mucosa C: Muscularis D: Adventitia