BIO 201 L Exam 1 Practice Questions and Correct Answers
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Course
BIO 201
Institution
BIO 201
Electrolytes inorganic ions which conduct electricity in solution
Pyretic pertaining to fever
Comparator control (integrating) center
Epithelium tightly packed cells that cover and line body surfaces. It lines, protects, and secretes. Relies on diffusion for nutrition and waste removal - classif...
BIO 201 L Exam 1 Practice Questions
and Correct Answers
Electrolytes ✅inorganic ions which conduct electricity in solution
Pyretic ✅pertaining to fever
Comparator ✅control (integrating) center
Epithelium ✅tightly packed cells that cover and line body surfaces. It lines, protects,
and secretes. Relies on diffusion for nutrition and waste removal
- classification is based on cellular morphology and the number of layers it makes up
Connective tissue ✅widely scattered cells with plenty of intercellular space and
substance (matrix)
- represents a wide assortment of subclasses, each with a variety of functions
Muscle tissue ✅excitable and contractile tissue
- the tissue has 3 subclasses, each with specific functions. They include skeletal,
cardiac, and smooth muscle
- muscle skates completely smoothly
Nervous tissue ✅excitable tissue used to send short-term signals to specific targets in
the body. It may also function as a specialized gland that released a hormone into the
blood.
Cell junction ✅specialized areas of the plasma membrane that attach a cell to another
cell or to extracellular materials
Gap junction ✅formed by a collection of proteins (connexions) with a hollow center
(central pore) allowing for the free diffusion of ions and small molecules between 2 cells
- common in epithelial tissue, cardiac and smooth muscle
Desmosomes : spot and hemi ✅durable intercellular connection. Formed by a
collection of cell adhesion molecules (cams) and proteoglycans (sticky proteins) that link
opposing cell membranes
- common in cells making up the superficial layer of the skin
- strong; serve to hold cells in place and can resist stretching and twisting
Types:
- spot desmosomes - stabilize the shape of the cell
- hemidesmosomes - attach the cell to the basement membrane
, Tight junctions (occluding) ✅formed by a collection of interlocking cell membrane
proteins. Immediately deep to these is the adhesion belt
- common in epithelial tissue where a water tight barrier is required: GI and urinary
tracts
- forms water tight barrier
Basement membrane ✅basal layer
Simple squamous epithelium ✅single layer of flattened cells
Location - alveoli of lungs
Function - reduces friction ; absorption and secretion
Stratified squamous epithelium ✅location - surface of skin
Function - provides physical protection against abrasions, pathogens, and chemical
attacks
Stratified cuboidal epithelium ✅location - lining of some ducts like sweat gland duct
Function - protection, secretion, absorption
Transitional epithelium ✅location - urinary bladder, renal pelvis, ureters
Function - permits expansion and recoil after stretching
Simple columnar epithelium ✅Location- lining of stomach, intestine, gallbladder,
uterine tubes, collecting ducts of kidneys
Function- protection, secretion, absorption
Stratified columnar epithelium ✅Location: small areas of the pharynx, epiglottis, anus,
mammary glands, salivary gland ducts, and urethra
Function: protection
Pseudostratified ciliated columnar epithelium ✅HAS CILIA
Location - lining of nasal cavity, trachea, and bronchi; portions of male reproductive tract
Function - protection, secretion, move mucus with cilia
Exocrine glands ✅secretes through ducts
- products go to places outside (surface of) the body or within a lumen within the body
Example - GI tract
Endocrine glands ✅secretes into the blood, no ducts
Merocrine secretion ✅Exocrine glands that secrete without losing cellular material
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