uk â /steÉr/ us â /ster/. B2 to look for a long time with the eyes wide open, especially when surprised, frightened, or thinking: Don't stare at people like that, it's rude. Chuck sat quietly for hours staring into the distance, thinking of what might have been.
1) A) adrenal B) thyroid C) thymus D) pancreas Answer: A 2) This endocrine gland lies outside the body cavities. It produces sex hormones. 2) A) ovary B) adrenal C) testis D) pituitary Answer: C 3) In addition to endocrine glands, some organs whose functions are primarily nonendocrine also produce hormones.
Hormones are produced by endocrine glands. In humans and many other animals, hormones are either peptide hormones (modified amino acids, peptides, small proteins) or steroid and steroid-like hormones. The endocrine glands are ductless glands and secrete hormones directly into the blood vessels nearby. The hormones are then carried throughout the body and act upon target cells and tissues. The target cells have protein receptors which recognize the hormone and bind it. This interaction of the hormone and its specific receptor occurs either in the cell membrane (amino acid, peptide, or small protein hormone) or in the cell interior (steroid hormones).