You arrive at your office early one morning, planning to get started on a pile of paperwork you’ve been ignoring for days. When you unlock the door and swing it open, a large, vaguely human shape leaps out at you. You jump back with your heart pounding, and your mouth goes dry before you realize it was just a coat hanging on the other side of the door. Which hormone has just been released into your bloodstream by your adrenal gland?
a. nitric oxide
b. acetylcholine
c. norepinephrine
d. prolactin
c. norepinephrine
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Specialized outgrowths of the plant epidermis called ____ are hairlike projections, such as root hairs
a. cuticles b. protoplasts c. stomata d. trichomes e. bark
When prey produce so many offspring in a short period of time that predators can attack only a fraction of them, it is referred to as
A) a numerical response. B) a functional response. C) predator satiation. D) cryptic reproduction.
Based on a patient's medical history, a doctor suspects that the patient may have been exposed to syphilis several years prior. Since the patient is currently asymptomatic, the doctor will be testing to see if the patient is in the latent stage of syphilis. Which of the following would be the most effective way to diagnose syphilis during latency?
A. dark-field microscopy of scrapings from chancres B. dark-field microscopy of blood specimens C. culture of blood specimens on syphilis selective agar D. serological testing of blood specimens
What type of tissue would be found surrounding the outside of a mouse intestine?
a. Simple squamous epithelium b. Simple cuboidal epithelium c. Smooth muscle d. Simple columnar epithelium e. striated muscle tissue