Their functions are absorption (epididymis and ductus deferens) and mechano-sensory reception (inner ear). Check out our quizzes and free worksheets for identifying epithelial tissue. By the structure of their excretory duct, multicellular glands classify as simple or compound. 7 a illustrates a layer of squamous cells with their membranes joined together to form an epithelium. Lab 3 ORGANIZATION of the BODY CELLS and TISSUES. Elongated membrane extension comprised of cytoskeletal protein core and cell membrane "envelope" responsible for locomotion of the cell. The cells, called chondrocytes, make the matrix and fibers of the tissue.
- Cells and tissues worksheet answers
- Cells and tissues answer key strokes
- Quiz on cells and tissues
Cells And Tissues Worksheet Answers
It is termed "pseudo" because, although single, it appears to have multiple layers. 6= Lymphatic/Immune. Blood clotting after an injury. Functions to serve as a means to protect the body from foreign or toxic materials. Pseudostratified: respiratory tract. For example columnar cells of the ileum transport iron from the intestinal lumen into the capillaries, and cuboidal cells of renal tubule expel the H⁺ (hydrogen ion) from the body into the urine. Osteon: subunit of compact bone. These tissues combine to form organs—like the skin or kidney—that have specific, specialized functions within the body. Occasionally you may have trouble with working your microscope. Cells and tissues answer key strokes. If you have a thick slide, or a slide without a cover, do NOT use the high- power objective). Based on the cell shape, epithelial tissue is classified into squamous, cuboidal or columnar. The main cell of the nervous system is the neuron, illustrated in Figure 14.
Cells And Tissues Answer Key Strokes
In other words, the tissue transitions from thick to thin. This gives strength and flexibility to the tissue. They differ in their length, motility and function. Epithelial tissues cover the outside of organs and structures in the body and line the lumens of organs in a single layer or multiple layers of cells. Each objective will have written the magnification. What term describes the condition of a desert mouse that lowers its metabolic rate and "sleeps" during the hot day? Difference Between Cell And Tissue - A Detailed Overview. They are most commonly found in a single layer representing a simple epithelia in glandular tissues throughout the body where they prepare and secrete glandular material. Remember the steps, if you can't focus under scanning and then low power, you won't be able to focus anything under high power. What until you read about all its specializations! 18 illustrates the histology of skeletal muscle. Add fur or fat to increase insulation. Each type of connective tissue has different cells that provide the materials for the matrix and the matrix of the connective tissue will differ to match the desired function of the connective tissue type. The wavy lines seen between the lacunae are microchannels called canaliculi; they connect the lacunae to aid diffusion between the cells.
Quiz On Cells And Tissues
Compact bone is organized into subunits called osteons, as illustrated in Figure 14. Pseudostratisfied columnar epithilia occur in a single layer, but the arrangement of nuclei makes it appear that more than one layer is present. There is true connective tissue, which form a protein matrix that connects tissues to each other that are classified as being either dense or loose. The space between the formed elements of the tissue is filled with the matrix. Like all types, it is formed by cells within an extracellular matrix (ECM). Color the images for use as a reference for identifying the models and dissected specimens. They can be unicellular and multicellular. This type is further divided into keratinized and non-keratinized. Ch 3 cells and tissues answer key. Always start with the scanning objective. These cells are arranged in a stratified layer, but they have the capability of appearing to pile up on top of each other in a relaxed, empty bladder, as illustrated in Figure 14. The key glial cells are the myelinating cells (Schwann and oligodendrocyte) that support and insult the axon of the neuron, and the astrocytes, microglia and oligoglia that support the health of the neuron via metabolic activities or functioning as immune-like cells. Skeletal muscle has striations across its cells caused by the arrangement of the contractile proteins actin and myosin. Sharks have cartilaginous skeletons, as does nearly the entire human skeleton during a specific pre-birth developmental stage. Use pencil - you can erase and shade areas.
There are also two types of specialized stratified epithelium: keratinized and transitional. Loose connective tissue, also called areolar connective tissue, has a sampling of all of the components of a connective tissue.