Aclient who just has been diagnosed with primary open-angle glaucoma (poag) refuses therapy. the nurse reinforces that it is important for the client to seek treatment. which goal is the nurse trying to achieve? prevent cataracts prevent blindness prevent retinal detachment prevent blurred distance vision

In the case presented above, of a patient diagnosed with primary open-angle glaucoma (POAG), who is refusing therapy. The insistence of the nurse that it is important for the patient to seek treatment is in a bid to prevent blindness. This is because without medical intervention, glaucoma can lead to total permanent blindness within just a few years.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

1. a tropical dry forest carries out more rapid nutrient cycling