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Lab practical 1
| Question | Answer |
|---|---|
| Describe simple squamous epithelial tissue | a single layer of flat, thin, scale-like cells that acts as a boundary for fast, passive diffusion and filtration. |
| What are the locations of Simple squamous | alveoli of lungs parts of kidney tubules |
| Describe Simple cuboidal epithelium tissue | a type of epithelial tissue composed of a single layer of cube-shaped cells (about as wide as they are tall) with centrally located, spherical nuclei |
| What are the locations of simple cuboidal | kidney and thyroid glands |
| Describe simple columnar epithelium tissue | a tissue type consisting of a single layer of tall, narrow, column-shaped cells, featuring oval-shaped nuclei usually located near the base. |
| What are the locations of simple columnar | lining the digestive tract (stomach to anal canal), gallbladder, fallopian tubes, and parts of the uterus |
| Describe keratinized stratified squamous epithelium | a protective tissue consisting of multiple cell layers, with flattened (squamous) surface cells filled with the tough, waterproof protein keratin |
| Where is keratinized stratified squamous located | primarily located in the epidermis of the skin |
| Describe Non-keratinized stratified squamous epithelium | a protective, multi-layered tissue with flat, moist surface cells containing nuclei |
| Describe Pseudostratified epithelium tissue | a type of simple (single-layer) epithelium that appears stratified (multilayered) because cell nuclei are positioned at varying levels, even though all cells rest on the basement membrane |
| Where is Pseudostratified epithelium tissue located | lining the upper respiratory tract (nasal cavity, trachea, bronchi) and parts of the male reproductive system (epididymis, vas deferens). |
| Describe Transitional epithelium, non-distended | a specialized, multi-layered, or stratified, tissue lining the urinary tract (bladder, ureters) designed to accommodate significant volume changes. |
| Where is Transitional epithelium, non-distended located | lining of urinary bladder |
| Describe Transitional epithelium, distended | the cell layers decrease and individual cells flatten, allowing the bladder or ureter to expand without rupturing |
| Describe loose connective tissue | a flexible, delicate type of connective tissue proper that functions as the body's scaffolding, packing material, and padding, holding organs and tissues in place |
| Describe adipose tissue | a specialized connective tissue composed primarily of adipocytes (fat cells) that stores energy in the form of lipids and triglycerides |
| Describe reticular tissue | a specialized form of loose connective tissue characterized by a delicate, three-dimensional network (reticulum) of Type III collagen fibers (reticular fibers) produced by fibroblasts called reticular cells |
| Describe dense irregular tissue | a durable, collagen-rich tissue characterized by randomly arranged, densely packed fibers that provide high tensile strength and resistance to stretching from multiple directions. |
| Describe dense regular tissue collagenous | a fibrous, high-tensile strength tissue characterized by densely packed, parallel bundles of collagen fibers and minimal ground substance. |
| Location of dense regular tissue? | tendons and ligaments |
| Describe dense regular elastic tissue | a specialized connective tissue with parallel collagen and significant elastic fibers |
| Describe hyaline cartilage | the most common and widespread type of cartilage in the human body. It is a smooth, pearly bluish-white, and semi-transparent tissue |
| Describe elastic cartilage | a highly flexible, yellowish connective tissue containing a dense network of elastic fibers, collagen type II, and chondrocytes, designed to provide both strength and elasticity to body structures |
| Describe fibrocartilage | cartilage that contains fibrous bundles of collagen, such as that of the intervertebral disks in the spinal cord. |
| Describe skeletal muscle tissue | a voluntary, striated muscle type attached to bones by tendons, comprising 30–40% of total body mass. |
| Skeletal muscle function? | Voluntary movement |
| Describe smooth muscle | an involuntary, non-striated muscle found in the walls of hollow organs, blood vessels, and respiratory/reproductive tracts |
| Describe cardiac muscle tissue | a specialized, involuntary, striated muscle tissue found exclusively in the heart wall. |
| What does apical mean? | the free, exposed top layer of an epithelial cell or tissue that faces an internal cavity (lumen), duct, or the external environment |
| what does basal mean? | the bottom edge of an epithelial cell or tissue that faces inward, anchoring to the underlying basement membrane and connective tissue. |
| What is the lumen? | the open, central space or cavity within a tubular structure, vessel, or hollow organ |
| What are goblet cells? | specialized, cup-shaped glandular epithelial cells found in the intestinal and respiratory tracts that primarily synthesize and secrete mucus (mucin glycoproteins). |
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