WSU bio 251 exam 1 Questions and Answers 100% Correct

WSU bio 251 exam 1 Questions and Answers 100% Correct Physiology vs Pathology - Answer ️️ -Physiology :Science of the normal function of living things Pathology:Study of the abnormal function of living things levels of organization in the body - Answer ️️ -1.Cells 2.Tissues 3.Organs 4. Organ systems cells - Answer ️️ -Cells Independently Carry Out All Life Processes differentiation - Answer ️️ -process by which cells become specialized to perform specific functions Differentiation results from altered gene expression in response to locally produced molecules stem cells - Answer ️️ -Undifferentiated cells two types of stem cells - Answer ️️ -1.Embryonic stem cells (pleuripotent ) 2. Tissue specific stem cells .Embryonic stem cells (pluripotent ) - Answer ️️ -can become any cell type of future fetus. Totipotent cell ( zygote) - Answer ️️ -can become either pluripotent cells or placental cells Tissue specific stem cells - Answer ️️ -partially specialized, found in many adult tissues stem cells Medical Promise of Stem Cells - Answer ️️ -replace damaged or non-functioning cells or in tissue engineering new body parts tissues - Answer ️️ -Collection of cells of similar type and function four types of primary tissue - Answer ️️ -1. epithelial e 4. connectic epithelial - Answer ️️ -- barrier between body and external environment; exchange, secretion - forms barriers -separates body from external environment lines hollow organs forms glands - specialed to transport molecules Epithelial Tissue: Glands - Answer ️️ --Epithelial tissue specialized for secretions two types of glands 1. exocrine gland rine exocrine glands - Answer ️️ -ducts leading to external environment Example: Salivary glands endocrine glands - Answer ️️ --ductless -secrete hormones into blood nerve - Answer ️️ -initiate, transmit electrical impulses Nerve Tissue - Answer ️️ --Function in transmitting electrical signals -Control and regulate muscle contraction, gland secretion, sensory perception, thoughts, memory, emotions, and much more muscle - Answer ️️ --contraction, generation of forc