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Exam 2
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Preguntas del test (54)
1Joe just burned himself on a hot pot. The burn is quite painful and has blistered. Joes burn would best be described as a third-degree burn.
- AVerdadero
- BFalso
2The skin cancer most likely to metastasize is cancer of the melanocytes.
- AVerdadero
- BFalso
3Which statement correctly explains why hair appears the way it does?
- AKinky hair has flat, ribbonlike hair shafts
- BPerfectly round hair shafts result in wavy hair
- CAir bubbles in the hair shaft cause straight hair
- DGray hair is the result of hormonal action altering the chemical composition of the melanin
4Which glands produce ear wax?
- AMerocrine glands
- Bapocrine glands
- Cceruminuous glands
- Deccrine glands
5The papillary layer of the dermis is composed of loosely packed connective tissue with numerous peg-like projections that provide a great deal of surface area connecting the dermis to the epidermis. Which of the statements below do not represent benefits provided by the papillary layers anatomy?
- AThe looseness allows for phagocytes to roam through the tissue and search for infection.
- BThe spaces in the connective tissue allow many small blood vessels to deliver nutrients and pickup waste diffusing from the superficial epidermal layers
- CThe looseness allows for easy separation of the dead cell layer of epidermis to be shed.
- DThe high surface area allows for a stronger connection of dermis to epidermis
6Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
- AThe skin is protected by the synthesis of three pigments that contribute to the skin's color
- BCarotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight
- CThe skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system
- DProlonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen
7Changes in the color of skin are often an indication of a homeostatic imbalance. Which of the following changes would suggest that a patient is suffering from Addison's disease?
- AThe skin takes on a bronze or metallic appearance
- BBlack and blue marks become evident for no apparent cause
- CThe skin appears to have an abnormal, yellowish tint
- DIt is impossible to suggest Addison's disease from an inspection of a persons skin
8What are the most important factors influencing hair growth?
- ASex and hormones
- Bage and glandular products
- Cthe size and number of hair follicles
- Dnutrition and hormones
9In addition to protection (physical and chemical barrier) the skin serves other functions. Which of the following is another vital function of the skin?
- AIt converts modified epidermal cholesterol to a vitamin D precursor important to calcium metabolism
- BIt aids in the transport of materials throughout the body
- CThe cells of the epidermis store glucose as glycogen for energy
- DIt absorbs vitamin C so that the skin will not be subject to diseases
10What is the first threat to life from a massive third-degree burn?
- Ainfection
- Bcatastrophic fluid loss
- Cunbearable pain
- Dloss of immune function
11Which of the following examples listed below illustrates homeostasis maintained by a negative feedback?
- AThickening of epidermis to form a callus in places where the skin is exposed to friction
- BChanges in the repose of the hair follicle to dihydrotestosterone (DHT)
- CFormation of cerumen was to deter insects from entering the ear
- DProduction of vitamin D initiated by the suns UV light striking the skin
12Which of the following examples listed below illustrates homeostasis maintained by a negative feedback?
- AAn increase in sebum production in response to androgens (male sex hormones)
- BRelease of sweat by eccrine glands in response to heat
- CExcretion of salts within the sweat
- DLack of pain in third degree burns due to damage to sensory nerves in the dermis
13A light skinned person may appear pink when they become over heated. The best explanation for this is
- AThe heart is pumping faster because the person was probably exercising
- Bblood flow has increased to the sweat glands in order to increased their metabolic activity
- Cthe melaocytes are responding to the heat of the sun and change the appearance of the skin with increased production.
- DThe blood vessels of the dermis have undergone vasodilation, bringing a greater volume of blood to the skin
14William has a cut that superficial, painful but not bleeding. Based on this information you would predict that the cut has penetrated to
- Athe subcutaneous layer, but not deeper
- Bthe stratum corneum but not the stratum granulosum
- Cthe papillary layer but not the reticular layer
- Dthe stratum basale but not the dermal layers
15The shock absorbing pads between the vertebrae are formed by fibrocartilage
- AVerdadero
- BFalso
16The role of brown fat is to warm the body; whereas, the role of white fat is to store nutrients
- AVerdadero
- BFalso
17Tendons and ligaments are composed mainly of dense irregular connective tissue
- AVerdadero
- BFalso
18Macrophages are found in areolar and lymphatic tissues
- AVerdadero
- BFalso
19Goblet cells are found within pseudostratified ciliated columnar epithelium
- AVerdadero
- BFalso
20Epithelial tissues always exhibit polarity; that is, they have a free surface and a basal surface
- AVerdadero
- BFalso
21Simple cuboidal epithelia are usually found in areas where secretion and absorption occur.
- AVerdadero
- BFalso
22Depending on the functional state of the bladder, transitional epithelium may resemble stratified squamous or stratified cuboidal epithelium.
- AVerdadero
- BFalso
23Elastic cartilage tissue is found in the walls of the large arteries that leave the heart.
- AVerdadero
- BFalso
24Cartilage tissue tends to heal less rapidly than bone tissue
- AVerdadero
- BFalso
25Cartilage has good regenerative capacity, while most epithelial tissues do not
- AVerdadero
- BFalso
26Endocrine glands are often called ducted glands
- AVerdadero
- BFalso
27Blood is considered a type of connective tissue
- AVerdadero
- BFalso
28which of the following is not found in cartilage but is found in bone
- Aliving cells
- Blucunae
- Cblood vessels
- Dorganic fibers
29the reason that intervertebral discs exhibit a large amount of tensile strength, which allows them to absorb shock , is because they possess
- Ahydroxyapatite crystals
- Bcollagen fibers
- Creticular fibers
- Delastic fibers
30how is hyaline cartilage different from elastic cartilage or fibrocartilage
- Ais is more vascularized
- Bit contains more nuclei
- Cfibers are not normally visible
- Dit allows great flexibility
31the primary blast cell for connective tissue proper is the
- Aosteoblast
- Bchondroblast
- Chemocytoblast
- Dfibroblast
32which of the following would be of most importance to goblet cells and other glandular epithelia
- Amicrovilli
- Bgolgi apparatus
- Clysosomes
- Dmultiple nuclei
33which of the following is a modification of the simple columnar epithelium that allows for efficient absorption along portions of the digestive tract
- Adense microvilli
- Bthin and permeable
- Cfibbroblasts
- Dcilia
34a ciliated version of pseudostratified columnar epithelium containing mucus-secreting goblet cells
- Alines most of the respiratory tract
- Baids in digestion
- Cis more durable than all other epitheliia
- Dis found in some of the larger glands
35which of the following epithelia forms the walls of the air sacs across which gas exchange occurs in the lungs
- Apseudostratified columnar
- Bsimple columnar
- Csimple squamous
- Dsimple cuboidal
36connective tissue extracellular matrix is composed of
- Acells and fibers
- Bfibers and ground substance
- Cground substance and cells
- Dall organic compounds
37the fiber type that gives connective tissue great tensile strength and is the most abundant protein in the body is
- Aelastic
- Bcollagen
- Creticular
- Dmuscle
38Groups of cells that are similar in structure and perform a common or related function form a
- Aorgan
- Btissue
- Corganism
- Dorgan system
39the shape of the external ear is maintained by
- Aadipose tissue
- Belastic cartilage
- Chyaline cartilage
- Dfibrocartilage
40a many-layered epithelium with cuboidal basal cells and flat cells at its surface would be classified as
- Asimple cuboidal
- Bsimple squamous
- Ctransitional
- Dstratified squamous
41which of the following is not a step in tissue repair
- Ainflammation
- Brestoration of blood supply
- Cregeneration and fibrosis
- Dformation of new stem cells
42Enzymes and proteins needed for cell division are synthesizes and put into place during G2 phase of the cell cycle
- AVerdadero
- BFalso
43if 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
- ATGCAA
- BACGTT
- CUGCAA
- DGUACC
44passive membrane transport processes include
- Amovement of a substance down its concentration gradient
- Bmovement of water from an area of high solute concentration too an area of low concentration
- Cconsumption of ATP
- Dthe use of transport proteins when moving substances from areas of low to high concentration
45which of the following is a principle of the fluid mosaic model of cell membrane structure
- Aphospholipids form a bilayer that is largely impermeable to water soluble molecules
- Bphospholipids consist of a polar head and a nonpolar tail made of three fatty acid chains
- Cthe lipid bilayer is a solid at body temperature, thus protecting the cell
- Dall proteins associated with the cell membrane are contained in a fluid layer on the outside of the cell
46which of the following is not a function of lysosomes
- Adigesting particles taken in by endocytosis
- Bdegrading worn-out or nonfunctional organelles
- Chelp in the formation of cell membranes
- Dbreaking down bone to release calcium ions into the blood
47cancerous 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
- Acells of the immune system recognizing the tumorous cells as foreign and destroying them
- Bthe cancer cells conserving energy for more growth
- Callowing the cancer cells to bind to their healthy, neighboring cells
- Da decrease in the permeability of the tumor cells plasma membrane preventing the uptake of chemotherapy drugs
48If a human cell were to increase the amount of cholesterol embedded within its plasma membrane which of the following would most likely happen
- Athe cell would form a plaque that could potential block a blood vessel
- Bthe plasma membrane would become more fluid and the phospholipids less stable
- Cthe plasma membrane would become more stable, less fluid and less permeable
- Dthe plasma membrane would become more permeable to ions and less permeable to lipids
49which of the following would not be restricted (limited) by low levels of ATP
- Apinocytosis
- Bexocytosis
- Cosmosis
- Dphagocytosis
50if a cell is selectively reducing the concentration of a particular enzyme in the extracellular fluid it will likely utilize
- Aphagocytosis
- Bpinocytosis
- Creceptor-mediated endocytosis
- Dexocytosis
51if a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize
- Aphagocytosis
- Bpinocytosis
- Creceptor-mediated endocytosis
- Dexocytosis
52beta cells in the pancreas produce and secrete the protein hormone insulin. You would expect to see a relatively large amount of which organelles in these cells?
- Acytoskeleton, and peroxisomes
- Bsmooth endoplasmic reticulum and lysosomes
- Cmitochondria and cilia
- Dgolgi apparatus rough endoplasmic reticulum
53colchicine is a drug that can prevent the formation of microtubules. which is the most likely affect colchicine would have on cell division?
- Ait will enhance mitosis by moving chromosome toward the spindle equator
- Bit will arrest mitosis by preventing the formation of spindle microtubules
- Cit would have little no effect on mitosis
- Dit would delay mitosis by preventing S phase
54Apoptosis is programmed cell suicide; cancer cells do not undergo this
- AVerdadero
- BFalso
Información
- Descripción
- anatomy and physiology Test sobre Exam 2, creado por Heidi Futia el 13/05/2017.
- Autor
- Heidi Futia
- Idioma
- English
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