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A&P Chapters 3, 4, & 5
Terms in this set (50)
The dense fibrous connective tissue portion of the skin is located in the reticular region of the dermis.
Which layer of skin is LEAST protected by melanin?
Thick skin has a more extensive dermal layer than thin skin.
Cancerous cells can divide so rapidly that they will often produce a glycocalyx that is different than the other cells in the body. This may result in ________.
cells of the immune system recognizing the tumorous cells as foreign and destroying them
Salivary glands exhibit simple tubuloalveolar glandular arrangement.
When tissues are injured or infected, chemical signals can be releases that affect the plasma membrane of cells that line the nearby blood vessels. These blood vessels cells (endothelial cells) respond to the chemical signals by displaying a type of glycoproteins on their surface. These proteins will attach to circulating white blood cells bringing them to the site of injury or infection. These glycoproteins would best be described as ________.
Cell Adhesion Molecules (CAMs)
If the nucleotide or base sequence of the DNA strand used as a template for messenger RNA synthesis is ACGTT, then what would be the sequence of bases in the corresponding mRNA?
Fibrocartilage is also known as gristle.
The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely to be found in the dermis?
fibroblasts, macrophages, and mast cells
The surge of sex hormones that accompanies puberty has a wide range of effects on the body. One of those effects is to enhance the activity of the sebaceous glands, increasing the production of sebum. Which of the following is the most likely to result from the increased sebaceous activity?
increased oily appearance and more acne
A patient has skin that is slightly blue in color. A likely treatment for this person might be ________.
giving the patient supplemental oxygen by mask
DNA transcription is another word for DNA replication
Which of the following is a principle of the fluid mosaic model of cell membrane structure?
Phospholipids form a bilayer that is largely impermeable to water-soluble molecules.
Select the correct statement regarding epithelia.
Stratified epithelia are present where protection from abrasion is important.
Cartilage tissue tends to heal less rapidly than bone tissue.
Derived from mesenchyme
Has a surface to which nothing is attached
moves blood through the body
moves food through the GI tract
Plays a role in the synthesis of steroid-based hormones and proteins.
The organelle that facilitates peptic bond formation between amino acids.
The vast majority of the cell's genetic material is housed here
Play a critical role in forming spindle fibers for cell division, organize and move organelles as well as giving shape to the cell
Despite its apparent durability, the dermis is subject to tearing. How might a person know that the dermis has been previously stretched and/or torn?
the appearance of visible, silvery-white scars is an indication of stretching of the dermis
Select the most correct statement concerning skin cancer
melanomas are rare but must be removed quickly to prevent them from metastasizing
Which of the following examples listed below illustrates homeostasis maintained by a negative feedback?
Release of chemical signals by keratinocytes that have been damaged by UV light that will increase the production of melanin.
Cartilage has good regenerative capacity, while most epithelial tissues do not.
Introns represent a genome scrap yard that provides DNA segments for genome evolution and a variety of small RNA molecules.
Blood is considered a type of connective tissue
Skin, lung, and blood vessel walls have which tissue characteristic in common?
The RNA responsible for bringing the amino acids to the ribosome for protein formation is ________.
The layer of the epidermis where the cells are considered protective but nonviable.
The glands that serve an important function in thermoregulation
The layer that contains the mitotic viable cells of the epidermis
Hair that lacks pigment and is often called "immature hair."
The epithelial membrane that lines the closed ventral cavities of the body
The epithelial membrane that lines body cavities open to the exterior membrane
Consists of keratinized stratified squamous epithelium
Links blood vessels and the heart
Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes ________.
accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer
Which of the following is NOT a function of lysosomes?
help in the formation of cell membranes
is division of the genetic material within the nucleus
Choose which tissue type likely functions to add support to an organ.
Chromosomes uncoil to form chromatin.
Chromosomal centromeres split and chromosomes migrate to opposite ends of the cell.
Nuclear membrane and nucleolus disintegrate.
Chromosomes align on the spindle equator.
Which of the following would be of most importance to goblet cells and other glandular epithelia?
A gene can best be defined as ________.
a segment of DNA that carries the instructions for one polypeptide chain
The fiber type that gives connective tissue great tensile strength is ________.
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