Test 1
Select the correct statement regarding the cells of connective tissue?
"Blast" cells are undifferentiated; actively dividing cells
Average body temperature is ______ degrees centigrade.
37
What is the ration of fatty acids to glycerol in neutral fats?
3:1
Match the following cavities __heart __stomach __Brain __Lungs __Uterus
4 1 4 3 2
Atom X has 17 protons. How many electrons are in its valence shell?
7
The composition of the secretion of the eccrine glands is ____.
99% water, sodium chloride, trace amounts of waste, and vitamin C
Once solid material is phagocytize and taken into a vacuole, which of the following statements best describes what happens?
A lysosomes combines with the vacuole and digests the enclosed solid material.
Select the most correct statement regarding nucleic acids.
B) Dna is long, double stranded molecule made up of A, T, G, and C bases.
Which of the following is not found in the matrix of cartilage but is in bone?
Blood vessels
Which of the following is true regarding the generation of a membrane potential?
Both potassium and sodium ions can "leak" through the cell membrane due is diffusion.
The single most abundant protein in the body is _______.
Collagen
In liquid XYZ, you notice that light is scattered as it passes thought. There is no precipitant in the bottom of the beaker, though it has been sitting for several days. What type of liquid is this?
Colloid
Which of the following is true about the mode of secretion of exocrine glands?
Contain simple or stratified epithelia and basement membrane
Mitochondria _____.
Contain some of the DNA and RNA code necessary for their own function.
A needle would pierce the epidermal layers of the foramen in what order>
Corneum, granulosum, spinosum, basale
What is the specific name for the hip region?
Coxal
Which of following statements is most correct regarding the intracellular chemical signals known as "second messengers"?
Cyclic AMP and calcium may be second messengers.
Which of the following is true about epithelia?
Endothelium provides a slick surface lining all hallow cardiovascular organs
Which of the following statements best describes what fingernail actually are?
Fingernails are a modification of the epidermis
Water lose through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin>
Laminated granules of the cells of the stratum granules, a glycolipid that is secreted into extracellular space
Which of the following cutaneous receptors is specialized for the reception of touch or light pressure?
Meissner's corpuscle
Which of the following is true about the mode of secretion of exocrine glands?
Merocrine glands are not altered by the secretory process
Which of the following is true regarding the concentration of solutions?
Molarity is one mole of south per 1000 ml of solution.
Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
Prolonged expose to the sun induces melanin dispersion, which in the turn acts as a natural sunscreen.
____ epithelium appears to have two or three layers of cells, but all the cells are contact with the basement membrane.
Pseudostratified columnar
Acne is a border associated with ____.
Sebaceous glands
Inability to absorb digested nutrients and secrete mucus might indicate a disorder in which tissue?
Simple columnar
Select the correct statement regarding epithelia.
Stratified epithelia are present where protection form abrasion is important
______ cavities are spaces within joints.
Synovial
What is a dipole?
a polar molecule
Homeostasis is the condition in which the body maintains ______.
a relatively stable internal environment, within limits.
A solution that has a pH of 2 could be best as described as being _____.
acidic
The endomembrane system is _______.
an interactive system of organelles whose membranes are physically or functionally connected
Peroxisomes ______.
are able to detoxify substances by enzymatic action
Which muscles attached tot eh hair follicles cause good bumps?
arreactor pili
The anatomical position is used _____.
as a standard reference point for directional terms regardless of the actual position of the body.
Which of the following is an example of suspension?
blood
The dorsal body cavity is the site of which of the following?
brain
The sebaceous glands are simple alveolar glands that secrete a substance known as sebum. The secretion of sebum is stimulated _______.
by hormones, especially androgens
Burns are devastating and debilitating because of loos of fluids and electrolytes form the body. How do physicians estimate the extend of burn damage associated with such dangerous fluid loss?
by using the "rule of nines"
the ____ gland is modified sudoriferous glans that secretes wax
ceruminous
Cell types likely to be seen in areolar connective tissue include all except _____?
chondrocytes
Mammary glands exhibit a glandular type called _____.
compound alveolar
An epithelial membrane _____.
contains simple or stratified epithelia and basement membrane
Two good examples of colloid would be Jell-O and _____.
cytosol
The papillary layer of the dermis is connect tissue heavily invested with blood vessels. The superficial surface has structures called:
dermal papillae
An oblique cut is one that is cut ____.
diagonally superior to inferior
Which body cavity protects the nervous system?
dorsal
Messenchymal cells are most commonly found in _______ connective tissue.
embryonic
A good example of a position feedback mechanism would be _______.
enhancement of labor contractions thought the exertion of oxytocin
What is a vertical section through the body, dividing it into anterior and posterior regions called?
frontal
Which cells are commonly found wedged between simple columnar epithelial cells?
goblet cells
When examining an organ, such as the heart, by direction would represent ____ anatomy.
gross
What are the three main components of connective tissues?
ground substance, fibers, and cells
Epithelial tissue ____.
has a basement membrane.
The first step in tissue repair involves _____.
inflammation
Which of the following organs or structures would be found int he left iliac region?
intestines
Salts are always ____.
ionic compounds
Which of the following statements is the most correct regarding homeostatic imbalance?
it is considered the cause of most diseases.
In which abdominopelvic cavity is the stomach located?
left upper
Pseudo stratified ciliated columnar epithelium ____.
lines the respiratory tract
The parietal pleura would represent a serous membrane _______.
lining the thoracic cavity
Male pattern baldness has a genetic switch that turns on in response to ______.
male hormones
Which of the following would not be a constituent of plasma membrane?
messenger RNA
Which structures are fingerlike projections that greatly increase the absorbing surface of the cells?
microvilli
What are glycosaminoglycans?
negatively charged polysaccharides
A structure that is composed of two or more tissues would be a(n) _____.
organ
What tissue has lacunae, calcium salts, and blood vessels?
osseous tissue
The heart lies in the _____ cavity.
pericardial
Cell junctions that promote the coordinated activity of cells by physically binding them together into a cell community include all of the following except _____.
peroxisomes
An epidermal dendritic cell is specialized ______.
phagocytic cell
Which process is the main mechanism for cells in ingest macromolecules?
phagocytosis
In which cavities are lungs located?
pleural, ventral, and thoracic
What is a chain of 25 amino acids called?
polypeptide
Keratinocytes are important epidermal cells because they _______.
produce a fibrous protein that gives the skin much of its protective proper
Which of the following does not see as a signal for cell division?
repressor genes
Although the integument is a covering, it is by means simple, and some of its functions include
resident macrophage- like cells whose function is to ingest antigenic invaders and present them to the immune system
What is a vertical section through the body, dividing it into left and right, called?
sagittal
One of the functional characteristics of life is irritability. This refers to _____.
sensing changes in the environment and then reacting or responding to them
The epidermis conduits of five layers of cells, each layer with a distinct role in play in the health, well being, and functioning of the skin. Which of the following layers is repressible for cell division and replacement?
stratum basale
A red blood cells placed in pure water would _____.
swell and burst
The reason the hypodermis acts as a shock absorber is that _____.
the major part of its makeup is adipose, which serves as an effective shock absorber
Extracellular matrix is _____.
the most abundant extracellular material
A chemical reaction in which bonds are broken is usually associated with _____.
the release of energy
The dermis has two major layers, which of the following constitutes 80% of the dermis and is responsible for the tension lines in the skin?
the reticular layer
In certain kinds of muscle cell,s calcium ions are stored in _____.
the smooth ER
Which of these is not part of the dorsal cavity?
thoracic cavity
Which of the following is not considered a factor in influencing a reaction?
time
Organized groups of cells (plus their intercellular substances) that have a common purpose from a(n) ______.
tissue
Histology would be best defined as a study of ______.
tissues
Which statement best describes connective tissue?
usually contains a large amount of matrix
The single most abundant chemical substance of the body, accounting for 60% to 80% of body weight, is _____.
water