Cryptorchidism is the descending of the testis through the inguinal canal
Indicate whether the statement is true or false
F
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Using the figure below, identify the location where each process occurs.
1 Pockets pinch off, forming endosomes known as coated vesicles.
2 Coated vesicles fuse with primary lysosomes to form secondary lysosomes.
3 Target molecules (ligands bind to receptors in plasmalemma.
4 The endosome fuses with the plasmalemma, and the receptors are again available for ligand binding.
5 The lysosomal and endosomal membranes separate.
6 Areas coated with ligands form deep pockets in plasmalemma surface.
7 Ligands are removed and absorbed into the cytoplasm.
The adrenal medulla is important to the sympathetic branch of the autonomic nervous system because
A) it is a source of catecholamines and it is considered a modified sympathetic ganglion. B) it is a source of catecholamines. C) it is considered a modified sympathetic ganglion. D) it is a source of catecholamines, it is considered a modified sympathetic ganglion, and it releases epinephrine and norepinephrine directly into the blood. E) it releases epinephrine and norepinephrine directly into the blood.
If a person is injected with a toxin that blocks acetylcholine receptors, which of the following will occur?
A. The sarcolemma will be constantly stimulated and muscles will continually contract. B. Spastic paralysis will result. C. The toxin will have no effect on muscle action. D. Stimulation of the sarcolemma will not be possible and muscles will be paralyzed. E. The person will develop myasthenia gravis.
Which layer of the digestive tract is in direct contact with the food that is consumed?
A) mucosa B) muscularis C) serosa D) submucosa