During organogenesis, which structure is not derived from the pharyngeal pouches?
A. Thyroid gland
B. Vertebra
C. Palatine tonsil
D. Thymus
E. Middle ear cavity
Answer: B
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________ line the brain ventricles and spinal canal
A) Astrocytes B) Satellite cells C) Oligodendrocytes D) Microglia E) Ependymal cells
Matching
A) Myxedema B) Cushing's disease C) Gigantism D) Cretinism 16) Hyposecretion of the thyroid in adults. 17) Hypersecretion of the adrenal cortex. 18) Hypersecretion of growth hormone. 19) Hyposecretion of the thyroid in infants.
Contraction of the ____________________ intercostal muscles elevates the ribs
Fill in the blank(s) with correct word
Describe the subatomic particle not in the nucleus
A) Protons are not in the nucleus. They whirl around the nucleus creating a proton cloud. B) Electrons are not in the nucleus. They whirl around the nucleus creating an electron cloud. C) Neutrons are not in the nucleus. They whirl around the nucleus creating a neutron cloud. D) Protons and neutrons are not in the nucleus. They whirl around the nucleus creating a proton and neutron cloud. E) Protons and electrons are not in the nucleus. They whirl around the nucleus creating a proton and electron cloud.