(Question)
Answer the following question given this paragraph: Figure 7.18 Paranasal Sinuses The paranasal sinuses are hollow, air-filled spaces named for the skull bone that each occupies. The most anterior is the frontal sinus, located in the frontal bone above the eyebrows. The largest are the maxillary sinuses, located in the right and left maxillary bones below the orbits. The most posterior is the sphenoid sinus, located in the body of the sphenoid bone, under the sella turcica. The ethmoid air cells are multiple small spaces located in the right and left sides of the ethmoid bone, between the medial wall of the orbit and lateral wall of the upper nasal cavity. Q: What type of cells are multiple small spaces located in the right and left sides of the ethmoid bone? Choices: - alveoli - ethmoid vacuoles - amniotic sacs - ethmoid air cells A:
(Answer)
ethmoid air cells

(Question)
Answer the following question given this paragraph: Ketones are carbonyls in which the carbon atom makes single bonds with two other carbon atoms. Ketones are less reactive than aldehydes and are a common component in nail polish removers and paint strippers. Q: What word describes a carbonyl where the carbon atom makes single bonds with two others? Choices: - acetone - ions - photons - ketones A:
(Answer)
ketones

(Question)
Answer the following question given this paragraph: Capillaries are the smallest type of blood vessels. They connect the smallest arteries (arterioles) and veins (venules). Exchange of substances between cells and the blood takes place across the walls of capillaries, which may be only one cell thick. Q: What is the term for the smallest blood vessels? Choices: - muscles - Aortas - arteries - capillaries A:
(Answer)
capillaries