Study Guide Ch 5 Integumentary System K

In this lab experiment, half our group observed and measured osmosis using dialysis tubes that were represented as the semipermeable membrane. It is permeable to water and other small molecules but is impermeable to larger molecules such as the sucrose solution used in each of the four beakers and tubing. The other half of our group observed the tonicity of sheep blood to determine whether the blood was isotonic, hypotonic, or hypertonic. The 85 g/dL of NaCl solution was the ideal isotonic number in relation to the sheep blood cells as well as a reference to the other observations of the solutions.

*Instillation administration – With this method, the medicine is in the form of a suspension or liquid that can be instilled in a number of ways; via the eyes, nose or ears.

1. The clear, keratinized portion of a fingernail is known as the nail _PLATE_. It has a root, body, and free edge.

The skin is divided into three different parts including the epidermis, dermis, and hypodermis. The epidermis is the outermost layer of the skin. This region of the skin has no blood cells or blood vessels running through it. All of the nutrients that the epidermis needs are received through diffusion from the dermis. The epidermis is made up of stratified squamous epithelial cells. The epidermis is made of five separate layers: the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and the stratum corneum. Starting at the innermost layer, the stratum basale is where mitosis of keratinocytes takes place. This layer of the epidermis also contains melanocytes which give the skin it’s pigment. As mitosis takes place in the stratum

13. I think this is hilarious. There is a saying that says "The rich get richer and the poor get prison" This is a funny skew in the phrase.

The outermost layer of the epidermis is known as the stratum corneum, it is water resistant and when not damaged, it protects the body from foreign substances such as bacteria, virus etc. it also ensures the protection of muscles, blood vessels, nerves and internal organs. The skin is also thicker in regions that requires more protection such as the sole of the feet and palms.

movement of water in tissues and maintain the fluidity of mucus and other secretions [3].

13. She decided to make the story she told a little more exciting by embellishing it and making up extra scenes.

This fluid is expelled from the body's capillaries and gathers either under the skin or in the body's internal organs.

“ It worked!” yelled Ella. “ I will split it evenly.Wow we all get a lot of slime. “NOOOOOOO IT GOT STUCK IN MY HAIR!” It was the worst color green I have ever seen! Its in my hair ewwwwww!

Therefore, dose and duration of treatment is limited, which in turn limits the amount of normal and tumor cell death. A second mechanism is the suppression of cancer cells for variable periods of time without cell death. This mechanism is referred to as remission. Unfortunately, the cancer can return at any time, and it is sometimes stronger. Here another limitation is introduced. Some tumor cells can develop resistance to a particular chemical agent, or several chemical agents, limiting the types of chemotherapeutic agents available for effective use. The last mechanism is cell differentiation, which helps the immune system learn to recognize and fight tumor cells (1).

The epidermis is the outer layer of the skin. It is stratified squamous epithelial layer of ectoderm origin and it is devoid of blood vessels and consists of four layers: stratum corneum, stratum granulosum, stratum spinosum, and stratum basale. Keratinocytes are the major cells in the epidermis, but other cells are also present such as melanocytes, langerhans, and merkel cells. The dermis is a connective tissue layer of mesodermal origin below the epidermis and contains blood vessels, sensory structures, collagen, fibroblasts, and elastic fibers. Its

Filtrate from the proximal tubule flows into the descending limb of the loop of Henle, which is permeable to water but does not transport ions. As the loop dips into the medulla, water moves by osmosis from the descending limb into the progressively more concentrated interstitial fluid. As a result, solutes are left behind in the proximal tubule, and the filtrate also becomes progressively more concentrated. When the fluid flow reverses direction (when it enters the ascending limb), the properties of the tubule epithelium change: the tubule becomes impermeable to water, but actively transports Na+, K+, and Cl- out of the tubule and into the interstitial fluid. The osmolarity of the filtrate is about 10X greater at the bottom of the loop than

Red blood cells placed in a hypertonic solution will also shrivel up and shrinks as they lose water (9). Water moves from a high water concentration inside the cell to a low water concentration outside of the cell by osmosis down the concentration gradient. Animals can regulate the concentration of water and mineral salts in the blood by

In animal cells, the movement of water into and out of the cell is influenced by the relative concentration of solute