Answer:
The correct answer is pituitary gland.
Explanation:
The pituitary gland is called the master gland because it regulates the secretion of many other endocrine glands. Pituitary is responsible for the secretion of hormone that regulated the level of estradiol and progesterone during the menstrual cycle.
Anterior pituitary release FSH(follicle-stimulating hormone) and LH(Luteinizing hormone) after it gets stimulation by GnRH secreted by the hypothalamus. FSH help in the production of estrogen by stimulating follicle and LH is responsible for the production of progesterone from corpus luteum. Therefore the correct answer is the pituitary gland.
Answer:
a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
The organ you're looking for is the liver.
Hope it helped!
Answer:
Macrophages are part of your innate immune system, which is antigen-independent and does not require activation.
Explanation:
Macrophages phagocytize (internalize) all non-self pathogens it encounters. These do their job without activation. Other cells in the innate immune system include basophils, neutrophils, eosinophils (these cells are polymorphonuclear leukocytes), mast cells, and dendritic cells, which act as the bridge between your innate and adaptive immune system.
All of the other entities listed above are part of your adaptive immune system. The adaptive immune system is antigen-dependent and requires activation. This section of your immune system responds differently to different pathogens, and has the bonus of having immunologic memory, the ability to remember pathogens after infection and respond much quicker upon secondary and tertiary encounters.
Note: All lymphocyte types begin as naïve cells, which then differentiate into their fully matured form upon activation.
Helper T cells are a type of CD4+ T cell that has the job of activating B and T lymphocytes. There are two different types of T helper cells: Th1 and Th2. Th1 cells secrete the cytokine interferon-gamma (IFNγ), and is primarily involved with the stimulation and activation of cytotoxic T cells, while Th2 cells secrete a variety of cytokines and are responsible for activating and assisting with B cells to make antibodies. To make a long story short, Th cells interact with APC (Antigen Presenting Cells), specifically their Class II MHC (a group of genes that present exogenous proteins). The Th cells then proliferate and gain the ability to activate these APC cells and provide the necessary signals to activate B and T cells and make them proliferate and do their specific function.
Answer:
There are some organisms which are not classified in plants and animals kingdom because there are some animals which has the characteristics of both plants and animals. For example, a specific organism make their own food like plants and also move from one place to another like animals.
Characteristics of kingdom protists :
1) They are made of one cell.
2) They are eukaryotic cell.
3) Some are autotrophic and some are heterotrophic organisms.