What is histology?
(Ans- The study of tissues
What is a tissue?
(Ans- A group of cells that act together to perform a specific function.
What are the fundamental tissues?
(Ans-
Epithelial
Connective
Muscle
Nerve
What is the function of epithelial cells?
(Ans- Cover, line, and protect the body and the internal organs.
What is the function of connective tissue?
(Ans- Framework of the body. Provides support and structure to organs.
What is neuroglia?
(Ans- The neurons and connective tissue cells that compose nerve tissue.
What ability does muscle tissue have?
(Ans- Ability to contract and shorten.
What is muscle tissue classified as?
(Ans- Voluntary(skeletal muscles) and involuntary(smooth & cardiac)
What is meiosis?
(Ans- The cell division that takes place in the gonads, i.e. the ovaries and testes.
What two layers compose the skin?
(Ans- Epidermis and dermis.
What is the epidermis?
(Ans- The outermost protective layer of dead keratinized epithelial cells.
What is the dermis?
(Ans- The underlying layer of connective tissue with blood vessels, nerve endings, and the associated skin tissues.
What are the layers of the epidermis?
(Ans- Corneum
Lucidum
Granulosum
Germivatum ( basale & spinosum)
Mnemonic: Candy Lions Growl Great.
What does the protein pigment melanin protect against?
(Ans- Radiation from the Sun
What is the dermis composed of?
(Ans- Fibrous connective tissue with nerve endings, blood vessels, sensory nerve endings, hair follicles, and glands.
What are the 2 types of sweat glands?
(Ans- ecrine & apocrine
What do ecrine sweat glands produce?
(Ans- Sweat. Regulate body temperature.
What do apocrine sweat glands produce?
(Ans- Secretions contain bits of cytoplasm from cells, attracting bacteria that produces body odor.
What do sebaceous glands secrete?
(Ans- They secrete sebum through the hair follicles, which lubricates the skin and prevents drying.
What secretion produces oil?
(Ans- Holocrine secretion.
What are sebaceous glands prone to during adolescence?
(Ans- Becoming clogged and attracting bacteria.
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