Study of Tissues
Terms
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- elongated microvilli
- stereocilia
- list three functions of cellular connections
-
intercellular communication
bind cells together
form a permeability barrier - hemidesmosome
- junction that attaches epithelial cells to the basement membrane
- where are gap junctions important?
- cardiac and smooth muscle
- merocrine glands
- secrete without losing celluar material
- apocrine glands
- discharge fragments of cells in secretion
- holocrine glands
- entire cell is shed as secretion
- What are the seven major functions of connective tissue?
-
enclosing and seperating
connecting tissues to one another
support and movement
storage
cushioning and insulation
transporting
protecting - What is the function of mast cells?
- mast cells respond to injury such as trauma and infection
- What do macrophages do?
- phagocytize foriegn or injured cells
- What are the three types of connective tissue?
- hyaline, fibrocartilage, and elastic cartilage
- single covalent bond
- electron pair shared by two atoms
- double covalent bond
- two atoms sharing four electrons
- nonpolar covalent bond
- covalent bonds where electrons are shared equally
- polar covalent bond
- electrons shared unequally, resulting in polar molecule
- compound
- two or more different types of atoms chemically combined
- hydrogen bond
- positively charged hydrogen is attracted to negative ions such as oxyegen or nitrogen
- ________ substances dissolve readily in water, while ______ substances do not.
- Polar, nonpolar
- How do substances dissolve in water?
- water molecules surround solute molecules; if positive and negative ends of H2O are attracted more to charged ends of other molecules than to each other, hydrogen bonds are broken
- substances that enter into a chemical reaction
- reactants
- substances that result from a chemical reaction
- products
- synthesis reaction where water is removed
- dehydration reaction
- chemical reaction that results from the exchange between sodium and chlorine
- oxidation- reduction reaction
- mixture
- combination of two or more substances physically blended but not chemically combined
- solution
- any liquid, solid or gas in which solutes are equally distributed
- suspension
- mixture that contains substances that seperate unless continually mixed
- colloid
- hetrogeneous, translucent mixture, such as milk
- an acidic solution has a _______ concentration of H+ ions
- greater
- a basic solution has a greater concentration of _______ ions
- hydroxide ions (HO-)
- compound consisting of a cation other than H+ and an anion other than HO-
- salt
- Carbohydrates are a compound of what molecules?
- carbon, hydrogen, and oxygen
- name three monosaccharides
- glucose, frutose, galatose
- two simple sugars bound by a dehydration reaction
- diasaccharide
- many monosaccharides that form a long chain
- polysaccharide
- most abundant organic compound
- cellulose
- 95% of the fats in the human body
- triglycerides
- two triglycerides
- glycerol and fatty acids
- lipid derived from fatty acids; regulates hormones
- eicosanoids