I believe the answer is, B for melanin
Answer:
Trace the sperm from where they are produced to where they are ejaculated.
Explanation:
<u>The testicles</u> <em>are the site of the scrotum where semen is produced</em>. <u>The epididymis</u> <em>is a coiled structure that crowns the testicles and receives immature sperm from the testicles and stores them for several days. </em><u>When ejaculation occurs</u>,<em> semen is expelled from an</em> <u>extremity of the epididymis</u> <em>into the</em> <u>vas deferens</u>. <em>Subsequently, semen travels through the</em> <u>vas deferens</u> <u>to the spermatic cord</u> <em>in the pelvic cavity beyond the ureter and behind the bladder</em>. <em>There</em>, <em>the</em> <u>vas deferens</u> <em>join with the</em> <u>seminal vesicle</u> <em>to form the ejaculatory duct, which crosses</em> <u>the prostate</u> <em>and empties into</em> <u>the urethra</u>. When ejaculation occurs, <em>rhythmic muscle movements propel sperm forward.</em>
Answer:
True
Explanation:
A bioterrorism attack is the deliberate release of viruses, bacteria, or other germs to cause illness or death. These germs are often found in nature. But they can sometimes be made more harmful by increasing their ability to cause disease, spread, or resist medical treatment.
Answer: Hematology, coagulation
Explanation:
a. Nasal cavity: the epithelium in this zone is meant to provide a physical barrier to the invasion of microorganism or particles, it also secretes and remove mucus and foreign particles, these epithelial cells are also involved in the igE producing process (perpetuating allergic responses. <em>The nose is the first barrier to the air that enters our body, that's why the epithelial cells in this zone focus in filtering foreign particles. </em>
b. Bronchiole: epithelium is ciliated and no ciliated, it becomes cuboidal in smaller passages as it continues to branch. The no ciliated cells, also known as club cells are the ones that produce surfactant. <em>Since bronchioles are passages to direct the air to the alveoles epithelial cells in this zone have adapted to go from larger branches to smaller ones to reach the alveoli. </em>
c. Alveolus: it's composed of two types of cells, type one, that constitute the air-blood barrier and type two, cells that produce surfactant to reduce surface tension to keep the alveolus shape when breathing.<em> Since alveoli's function is to allows oxygen/carbon dioxide to move between bloodstream the epithelial cells in this organ evolved to cover this job.</em>
I hope you find this information useful and interesting! good luck!