Sister chromatids are held together by a

False:Supporting cells in nervous tissue that can divide are glial cells, not neurons. Glial cells maintain, protect, and support neuronal function, and they retain the ability to reproduce throughout life. Neurons are specialized cells responsible for transmitting electrical impulses, and they have a very limited ability to undergo cell division once mature. Damage to neurons usually results in permanent loss of function.

A. Merocrine; holocrine:Merocrine glands secrete their products via exocytosis, and holocrine glands release entire cells, but this distinction does not directly describe mucus versus watery secretions.

B. Endocrine; exocrine:Endocrine glands release hormones into the bloodstream, and exocrine glands secrete onto surfaces or into ducts. This classification does not specify the type of fluid produced, such as mucus or watery secretions.

C. Serous; mucous:Serous glands produce a watery, protein-rich secretion, while mucous glands produce thick, sticky mucus. This reverses the secretion types described.

D. Apocrine; mixed:Apocrine glands release portions of cells along with secretions, and mixed glands can produce both mucus and serous products. While related, this does not Correct answer the distinction between mucus and watery fluids.

E. Mucous; serous:Mucous glands secrete mucus, which combines with water to form a thick, sticky product, whereas serous glands produce a relatively watery, enzyme-rich fluid. This accurately distinguishes the two secretion types.