BIOL 3330 Exam 1 (Chapters 4 & 5) Questions With 100% Verified Answers

Which of the following is not considered a wandering cell of Loose Connective Tissue? a.) Lymphocytes b.) Macrophages c.) Eosinophil d.) Fibroblast - correct answers d.) Fibroblast Loose Connective Tissue is also called: a.) Areolar connective tissue b.) Ground substance c.) Adipose tissue d.) Hyaline cartilage - correct answers a.) Areolar connective tissue The lining of our gut is not an epithelium because it is not on the exterior side of our body. a.) True b.) False - correct answers b.) False Connective tissue is composed of: a.) Cells and fibers b.) Fibers and ground substance c.) Ground substance and fluid d.) Cells, fibers and ground substance - correct answers d.) Cells, fibers and ground substance Lymphatic obstruction can cause edema due to increased absorption due to obstruction of lymphatic capillaries by cancer cells or parasites such as those causing elephantiasis. a.) True b.) False - correct answers b.) False Identify the type of cell junction indicated by line B. a.) Holocrine b.) Axoneme c.) Junctional complex d.) Hemidesmosome - correct answers d.) Hemidesmosome Loose and Dense Connective Tissue is classified as: a.) Blood b.) Connective Tissue Proper c.) Bone d.) Hyaline Cartilage - correct answers b.) Connective Tissue Proper Ground substance contains chondroitin sulfate and keratohyalin which result in a firm gel. a.) True b.) False - correct answers b.) False Blood is a special form of connective tissue because it does not contain fibers. a.) True b.) False - correct answers b.) False Reticular fibers and collagen fibers are similar in that they both: a.) Exhibit same banding periodicity b.) Are found in hyaline cartilage c.) Show similar staining with PAS d.) Are present in tendons - correct answers a.) Exhibit same banding periodicity Holocrine secretion in a gland means: a.) It is a compound gland b.) It is a serous gland c.) It is a mucus gland d.) It releases secretions as whole cells - correct answers d.) It releases secretions as whole cells Simple squamous epithelium is composed of a single cell layer that is flattened and spread out. a.) True b.) False - correct answers a.) True The mechanism by which water from the tissue fluid flows back into the capillary is called: a.) Diffusion b.) Osmosis c.) Active transport d.) Reverse polarity - correct answers b.) Osmosis Glands releasing secretions to the surface of your skin would be called Exocrine Glands. a.) True b.) False - correct answers a.) True Which transmembrane protein listed below is attacked by a small protein produced by the bacterium, Clostridium perfringens, and causes food poisoning by weakening the zonula occludens in intestinal epithelium? a.) Occludin b.) Claudin c.) Junctional adhesion molecule d.) Connexin - correct answers b.) Claudin Collagen fibers are the only fibers present in loose connective tissue. a.) True b.) False - correct answers b.) False Procollagen forms a collagen fibril which can be viewed with a light microscope. a.) True b.) False - correct answers b.) False Epithelioid tissues are considered a type of connective tissue because they are closely approximated and attached to a basement membrane. a.) True b.) False - correct answers b.) False Ground substance contains hyaluronidase which makes ground substance more viscous. a.) True b.) False - correct answers b.) False Reticular fibers are argyrophilic which means that they stain easily with gold stains. a.) True b.) False - correct answers b.) False Which of the following is not considered a fixed cell of Loose Connective Tissue? a.) Mesenchymal cells b.) Adipose cells c.) Fibroblast d.) Macrophage - correct answers d.) Macrophage The primary function of fibroblasts is to produce: a.) Collagen fibers b.) Tissue fluid c.) Fat d.) Histamine - correct answers a.) Collagen fibers Reticular tissue is not found in which tissue or organ listed below: a.) Sinusoid of the liver b.) Umbilical cord c.) Spleen d.) Myeloid tissue - correct answers b.) Umbilical cord Intercellular substance is composed of: a.) Ground substance and fluid b.) Cells, fibers and ground substance c.) Cells and fibers d.) Fibers and ground substance - correct answers d.) Fibers and ground substance Edema can be defined as the: a.) Swelling caused by excess tissue fluid b.) Formation of a cartilage template c.) Transport of waste products from the cells d.) Release of fatty acids into the blood - correct answers a.) Swelling caused by excess tissue fluid A simple, alveolar gland would have which of the following characteristics: a.) Branched and tubular in shape b.) Unbranched and tubular in shape c.) Branched and flask shaped d.) Unbranched and flask shaped - correct answers d.) Unbranched and flask shaped Bone has a rigid and hard ground substance. a.) True b.) False - correct answers a.) True Procollagen fibers are composed of 3 polypeptide chains twisted round each other in a double helix. a.) True b.) False - correct answers b.) False Adipose cells are fat cells. a.) True b.) False - correct answers a.) True The main difference between epithelial tissue and connective tissue is: a.) Connective tissue contains many types of junctional complexes b.) Connective tissue has intercellular substance c.) Connective tissues are all composed of dense material like bone d.) There are less types of connective tissue than epithelial tissue - correct answers b.) Connective tissue has intercellular substance Identify the area formed from the combination of the three types of cell junctions indicated in area A in the graphic. a.) Axoneme b.) Hemidesmosome c.) Holocrine d.) Junctional complex - correct answers d.) Junctional complex Brown fat is the predominant type of fat found in humans. a.) True b.) False - correct answers b.) False Starvation can lead to tissue swelling because of the lower amount of protein in the blood. a.) True b.) False - correct answers a.) True Which structure listed below is not considered part of the Junctional Complex. a.) Tight junction b.) Axoneme c.) Desmosome d.) Adhesion belt - correct answers b.) Axoneme Which function below is not associated with the Reticuloendothelial System. a.) Remove old RBC s from blood b.) Phagocytose bacteria from blood c.) Store and release recovered iron from RBC hemoglobin d.) Produce calcified cartilage - correct answers d.) Produce calcified cartilage Lymph capillaries begin as blind tubes in the connective tissue. a.) True b.) False - correct answers a.) True Of the functions listed below, which one is not associated with white or yellow fat found in humans. a.) Fuel storage b.) Insulation against heat loss c.) Padding to absorb shock d.) Heat production - correct answers d.) Heat production Procollagen fibers lay next to each other to form a collagen fiber and overlap by a quarter of their length which results in gaps which can fill with negative stain such as phosphotungstate to give a periodicity of 64 nm for alternating light and dark bands. a.) True b.) False - correct answers a.) True The Periodic Acid-Schiff Reaction (PAS) oxidizes paired alcohol groups called Schiff s bases to aldehydes. a.) True b.) False - correct answers a.) True Elastic fibers are easily stretched but return to their former shape when stretching stops. a.) True b.) False - correct answers a.) True Spot-like areas containing tubular channels called connexons which connect the cytoplasm of two different cells are called: a.) Adhesion belt or zonula adherens b.) Tight Junction or zonula occludens c.) Gap junctions d.) Desmosome or macula adherens - correct answers c.) Gap junctions In infants and young children, there is a continuous subcutaneous fat layer of constant thickness over the whole body called the: a.) Unilocular b.) Panniculus adiposus c.) Multilocular d.) Wharton s Jelly - correct answers b.) Panniculus adiposus Hyaluronic acid is present in synovial joints and its viscous nature makes it a good lubricant enabling joints to move more smoothly. a.) True b.) False - correct answers a.) True Absorption of water from the tissue fluid back into the blood occurs in the region of the capillary closest to the: a.) Venule b.) Artery c.) Arteriole d.) Vein - correct answers a.) Venule Dense Regular Connective Tissue can be found in the: a.) Bone b.) Spleen and lymph nodes c.) Ligaments and tendons d.) Liver - correct answers c.) Ligaments and tendons Heparin and Histamine are secreted by cells called: a.) Lymphocytes b.) Mast cells c.) Fibroblasts d.) Macrophages - correct answers b.) Mast cells Tissue fluid is formed by the diffusion of molecules from the region of the capillary closest to the: a.) Arteriole b.) Artery c.) Vein d.) Venule - correct answers a.) Arteriole A fibroblast is an example is an immature cell that produces fibers. a.) True b.) False - correct answers b.) False "In epithelial tissue, the main site for anchoring microfilaments to the cell membrane is called the:" a.) Adhesion belt or zonula adherens b.) Desmosome or macula adherens c.) Tight Junction or zonula occludens d.) Gap junctions - correct answers a.) Adhesion belt or zonula adherens Epithelial tissue is body tissue that lines the exterior surface of our body including the lining of the gastrointestinal tract. a.) True b.) False - correct answers a.) True Pseudostratified columnar ciliated epithelium found lining the respiratory pathway is described as: a.) Having many layers but no keratin b.) Having many layers containing keratin c.) Formed from a single layer of box-like cells d.) Having just one layer of cells - correct answers d.) Having just one layer of cells During heart failure, decreased hydrostatic pressure due to the impaired return of venous blood to the heart can cause ankles to swell. a.) True b.) False - correct answers b.) False The hemidesmosome helps to prevent fluids from passing between cells from outside the body to inside. a.) True b.) False - correct answers b.) False The __________ is unique to epithelial tissues and forms a strong adhesion with other epithelial cells. a.) Tight Junction or zonula occludens b.) Gap junctions c.) Adhesion belt or zonula adherens d.) Desmosome or macula adherens - correct answers a.) Tight Junction or zonula occludens Which tissue below is not an example of an epithelioid tissue? a.) Islets of Langerhans in the pancreas b.) Lutein cells of the ovary c.) Interstitial cells of Leydig in the testis d.) Epidermis - correct answers d.) Epidermis Epithelia are classified according to the number of cell layers they have and whether they have blood vessels or not. a.) True b.) False - correct answers b.) False Which of the functions below is not a function of connective tissue: a.) Lines external surfaces of body b.) Repair after injury c.) Mechanical support d.) Transport medium - correct answers a.) Lines external surfaces of body In the umbilical cord, mucous connective tissue is called: a.) Wharton s Jelly b.) Kupffer s cells c.) Areolar connective tissue d.) Hyaline Cartilage - correct answers a.) Wharton s Jelly Collagen fibers exhibit an axial periodicity which appears as repeating bands running down the length of the fibers. a.) True b.) False - correct answers a.) True Loose and Dense Connective Tissues have a firm but flexible ground substance. a.) True b.) False - correct answers b.) False The type of epithelium which is composed of a single layer of box-like cells is called: a.) Simple cuboidal b.) Pseudostratified columnar c.) Simple squamous d.) Stratified squamous - correct answers a.