Match the following:
A) Fovea centralis
B) Retina
C) Aqueous humor
D) Lens
1) The sensory layer of the eye.
2) The structure most responsible for focusing light rays that enter the eye.
3) Helps maintain the intraocular pressure; located in the anterior part of the eye.
4) Area of greatest visual acuity.
1) B Retina
2) D Lens
3) C Aqueous humor
4) A Fovea centralis
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The predominant lipid in the cell membrane is a ________.
A. glycolipid B. cholesterol C. phospholipid D. prostaglandin E. triglyceride
With respect to hormonal control and secretion, theca cells in the ovary are analogous to Leydig cells in the testis.
Answer the following statement true (T) or false (F)
If you add a single cholesterol molecule into the plasma membrane, do you expect that, several hours later, it will be in the same place (i.e., adjacent to the same exact phospholipid molecules).
A. Cholesterol will migrate away from phospholipids and toward proteins. B. Cholesterol will associate with adjacent phospholipid molecules and stay near them. C. Cholesterol will be excluded from the bilayer and will no longer be associated with phospholipids because they have different properties. D. All of the molecules will move freely in the lipid bilayer.
The PaCO2 will decrease when:
A. alveolar ventilation and CO2 production are increased, and dead space is increased B. alveolar ventilation is decreased, CO2 production is unchanged, and dead space is increased C. alveolar ventilation is increased, and CO2 production and dead space are decreased D. both alveolar ventilation and CO2 production are decreased, and dead space is increased