HESI A2 Anatomy and Physiology Exam : Questions & Answers: Updated A+ Guide Solution

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.