The motor neuron releases acetylcholine into the ____________________ to initiate a muscle contraction. Fill in the blank(s) with the appropriate word(s)
ANSWER: neuromuscular junction
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You are a doctor examining a patient's blood test results. The patient's T cell count is low, and T cells that are present are not well developed. You examine scans of the patient's thymus. It is underdeveloped, which means the T cells in the blood ______
(Select all correct answer options.) A. will be present in lower numbers because the thymus is where T cells are formed. B. will be present in lower numbers because the thymus is where T cells mature. C. will have not undergone selection against self-recognition, and the patient will be more susceptible to autoimmune diseases.
Bile from the liver is stored in the ________ before entering the intestine
A) pancreas B) gallbladder C) large intestine D) bile duct
Which characteristic distinguishes eukaryotes from other organisms?
a) the ability to conduct photosynthesis b) cells with nuclei encased within membranes c) the presence of nucleic acids d) tissues organized into organs
Which of the following statements is NOT true of protistan cysts?
A. Their consumption can lead to human health problems. B. They facilitate the spread of pathogens from one host to another. C. They may arise from sexual reproduction. D. They may arise from asexual reproduction. E. They attach to host cells by small hooks.