Answer:
Spermatogenesis , Spermatogonia
Explanation:
Gonads are the primary sex organs in the male which are the two testes.
Each testis divide into testicular lobules each containing the sparse connective tissue with the endocrine interstitial cells that secrets testosterone, and also contains one to four highly convoluted seminiferous tubules which is responsible for sperm production.
The process is known as <u>spermatogenesis</u>.
This process begins with mitotic division of stem cells which are located close to basement membrane of tubules. The cells are known as <u>spermatogonial stem cell</u>s. The division produces two types of cells.
Type A cells are the cells which replenish stem cells and type B cells are the cells which differentiate into spermatocytes. They have number of chromosomes = 46.
Answer:
The chyme, which is already a fecal bolus formed produces an involuntary stimulus reaching the colon that cause the defecation; The first step is the relaxation of the internal sphincter through the sacral nerve (involuntary), and then voluntarily the cerebral cortex through the pudendal nerves that relax the external sphincter.
Answer:
I do not agree with Heather’s definition of homeostasis because, by definition, homeostasis is defined as the ability of a body to create comfortable conditions by being at equilibrium or stabilizing itself internally whenever there are changes externally/outside the body. With regard to homeostasis, the room temperature of the internal part of the body, as with many other things in the body, is dynamic and does not stay at one place when external conditions change—it changes in order to maintain balance or equilibrium; hence, I do not agree with Heather’s definition of homeostasis.
Answer:
in a critical thinking class you may learn critical thinking
Explanation:
