NSCI 280 Week 2 Quiz


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NSCI 280 Week 2 Quiz


Week Two Quiz

Chapter 4 Tissues
1. The four primary tissue types are

a. epithelial, cartilage, muscle, and brain.
b. connective, eipithelial, skin, and blood.
c. epithelial, connective, muscle, and nerve.
d. glands, bone, lungs, and kidney.
e. bone, skin, blood, and muscle.

2. Epithelial tissue is characterized by

a. tightly packed cells.
b. absence of any basement membrane.
c. extensive extracellular matrix.
d. a rich blood supply.
e. both tightly packed cells and a rich blood supply.

3. Which of the following characteristics is NOT consistent with simple squamous epithelial tissue?

a. little extracellular material
b. rest on a basement membrane
c. has good blood supply within it
d. the cells are thin and flat (not thick)
e. acts as a permeability barrier

4. What is a small protein channel that allows the passage of ions and small molecules between cells?

a. hemidesmosomes
b. zonula adherens
c. zonula occludens
d. gap junction
e. Desmosomes

5. What type of epithelial tissue is found in the kidney tubules?

a. simple cuboidal epithelium
b. simple columnar epithelium
c. stratified squamous epithelium
d. pseudostratified ciliated columnar epithelium
e. transitional epithelium

6. The secretions of endocrine glands are released directly

a. onto the skin surface.
b. into the bloodstream.
c. into a gland duct.
d. into the nervous tissue.
e. into the lumen of a tube.

7. A general characteristic of connective tissue is that it

a. consists of cells with much extracellular material (matrix) between them.
b. has no blood supply to the tissue.
c. covers the outside of organs.
d. is commonly found lining body cavities.
e. contracts.

8. Cartilage heals slowly after an injury because

a. this tissue type is very complex.
b. it contains so much proteoglycan.
c. it has few, if any, blood vessels.
d. it is a dead, rather than a living, tissue.
e. it contains no fibroblasts.

9. What type of muscle is found in the wall of the digestive tract?

a. skeletal muscle
b. smooth muscle
c. cardiac muscle

10. Which of the following is correctly matched?

a. neurons - supportive cells of the nervous system
b. axons - conduct action potentials away from the cell body
c. neuroglia - the conducting cell of the nervous system
d. dendrite - rapidly dividing cell
e. axon - carry action potentials toward the cell body

Chapter 5 Integumentary System
1. The integumentary system has many functions, one of which is

a. protection from cancer.
b. production of Vitamin E.
c. detection of painful stimuli.
d. regulation of acid-base balance.
e. prevention of albinism.

2. Keratinocytes

a. produce skin pigments in cell organelles called melanosomes.
b. are found in both the dermal and the epidermal layers of the skin.
c. are special cells of the immune system.
d. are responsible for the reduction of water loss from the skin.
e. determine thickness of the skin.

3. The stratum basale

a. is easily shed when you rub your hands together.
b. has a mixture of living and dead cells - mostly dead.
c. contains many blood vessels that nourish the epidermis.
d. contains cells that undergo mitosis to form new epidermal cells.
e. contains cells that undergo meiosis to form new epidermal cells.

4. Melanin

a. is transferred to other cells by osmosis.
b. is increased with exposure to infrared light.
c. is absent in individuals known as albinos.
d. is a pigment produced by cells in the stratum corneum.
e. makes the skin lighter.

5. Fingerprints and footprints are produced by projections into the epidermis called

a. striae.
b. cleavage lines.
c. reticular lines.
d. melanocytes.
e. papillae.

6. Which of the following statements concerning the hypodermis is false?

a. Hypodermis is referred to as subcutaneous tissue.
b. Hypodermis is composed of dense connective tissue with collagen and elastin fibers.
c. The main cell types of the hypodermis are fibroblasts, fat cells, and macrophages.
d. The hypodermis attaches the skin to underlying bone and muscle.
e. The hypodermis is a site of fat storage.

7. The portion of a hair that protrudes above the surface of the skin is the

a. hair bulb.
b. hair root.
c. hair shaft.
d. hair follicle.
e. dermal papilla.

8. Sweat

a. is a hypertonic fluid.
b. is produced by a merocrine or apocrine gland.
c. contains only water.
d. reaches the body only through the hair follicles.
e. is not associated with emotions.

9. The nail root and the nail body attach to the

a. lunula.
b. nail bed.
c. nail groove.
d. hyponychium.
e. hypodermis.

10. An abrasion of the skin results in which of the following?

a. fluid retention by the kidney
b. increased melanin production
c. portal of entry for microorganisms
d. loss of cell regeneration ability
e. irreversible damage to the epidermis

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