EXSC 223 Chapter 4 Questions and All
Actual Answers.
Tissue refers to - Answer groups of cells that are similar in structure and perform a common
function
The diverse types of connective tissue are classified as such because they have the same origin
(T/F) - Answer True because all cells that are classified as part of connective tissue arise form
the same embryonic tissue (find out what it is)
What is meant by innervated but avascular? - Answer has nerves but not blood vessels
Blood is considered a type of connective tissue (T/F) - Answer True (Find out why!)
A scar is comprised of connective tissue (T/F) - Answer True
Connective tissue that is comprised of lipid filled cells - Answer adipose loose areolar
connective tissue. It does not bind and support but it does insulate and provide stored energy
for metabolism
Connective tissue is comprised of - Answer cells, fibers, and ground substances. Fibers
(collagen) and ground substance (GAGs and water) are found in the extracellular matrix
Consists mostly of collagen fibers (secreted by fibroblasts) oriented in 1 direction - Answer
dense regular connective tissue. Why is this advantageous and where are they found?
What is the difference between simple columnar and pseudostratified columnar epithelium? -
Answer Pseudostratified has a non-uniform appearance of nuclei
A single layer of epithelial cells found lining blood vessels is called - Answer simple squamous
epithelium (endothelium)
All mucous membranes contain goblet cells and produce mucous (T/F) - Answer False
(mucous membranes located in eyes, nose, trachea, etc.)
Epithelial cells only arise from ectoderm (T/F) - Answer False, epithelial cells only arise from
all 3 layers of the developing embryo (ectoderm, mesoderm, and endoderm)
, Different glands can release their contents through different methods. Which mode of secretion
for exocrine glands is similar to "puking" its contents? - Answer Holocrine, holocrine glands
spill their contents (puke) while the other mode of secretion is the results of exocytosis
All types of connective tissues bind and support (T/F) - Answer False, (find out what
connective tissue does not bind and support)
Adjacent epithelial cells are connected by desmosomes or tight junctions. The ______ surface is
adjacent to the _________. - Answer basal; basement membrane (basal lamina)
Why is it advantageous that your skin is made from stratified squamous rather than simple
squamous epithelia? - Answer The extra layers of cells aid in the coping with abrasion
Epithelial tissue - Answer forms boundaries between different environments, protects,
secretes, absorbs, filters; located on skin surface and in lining of GI tract organs
Epithelium - Answer sheet of cells lining a body surface or body cavity; 2 types are
covering/lining and glandular
Interface tissue protects: - Answer keeps things out of your body
Interface tissue absorption: - Answer lining of small intestine where you absorb
Interface tissue filters: - Answer kidneys and capillaries
Interface tissue excretes: - Answer elimination of waste. When macrophages break
something down (bacteria or protein) they internalize it via endocytosis, digest it, and release it
via exocytosis into the exracellular space.
Interface tissue secretes: - Answer releases something that you produced. Interface tissue
also has sensory reception.
Polarity in epithelium - Answer a) Apical - Top Surface, when looking at skin, we see apical
surface. Always refers to layer that is exposed.
b) Basal - bottom surface (refers to the surface of the cells that are next to basement
membrane)
Basement membrane (lamina propria) - Answer basal lamina & reticular lamina
Actual Answers.
Tissue refers to - Answer groups of cells that are similar in structure and perform a common
function
The diverse types of connective tissue are classified as such because they have the same origin
(T/F) - Answer True because all cells that are classified as part of connective tissue arise form
the same embryonic tissue (find out what it is)
What is meant by innervated but avascular? - Answer has nerves but not blood vessels
Blood is considered a type of connective tissue (T/F) - Answer True (Find out why!)
A scar is comprised of connective tissue (T/F) - Answer True
Connective tissue that is comprised of lipid filled cells - Answer adipose loose areolar
connective tissue. It does not bind and support but it does insulate and provide stored energy
for metabolism
Connective tissue is comprised of - Answer cells, fibers, and ground substances. Fibers
(collagen) and ground substance (GAGs and water) are found in the extracellular matrix
Consists mostly of collagen fibers (secreted by fibroblasts) oriented in 1 direction - Answer
dense regular connective tissue. Why is this advantageous and where are they found?
What is the difference between simple columnar and pseudostratified columnar epithelium? -
Answer Pseudostratified has a non-uniform appearance of nuclei
A single layer of epithelial cells found lining blood vessels is called - Answer simple squamous
epithelium (endothelium)
All mucous membranes contain goblet cells and produce mucous (T/F) - Answer False
(mucous membranes located in eyes, nose, trachea, etc.)
Epithelial cells only arise from ectoderm (T/F) - Answer False, epithelial cells only arise from
all 3 layers of the developing embryo (ectoderm, mesoderm, and endoderm)
, Different glands can release their contents through different methods. Which mode of secretion
for exocrine glands is similar to "puking" its contents? - Answer Holocrine, holocrine glands
spill their contents (puke) while the other mode of secretion is the results of exocytosis
All types of connective tissues bind and support (T/F) - Answer False, (find out what
connective tissue does not bind and support)
Adjacent epithelial cells are connected by desmosomes or tight junctions. The ______ surface is
adjacent to the _________. - Answer basal; basement membrane (basal lamina)
Why is it advantageous that your skin is made from stratified squamous rather than simple
squamous epithelia? - Answer The extra layers of cells aid in the coping with abrasion
Epithelial tissue - Answer forms boundaries between different environments, protects,
secretes, absorbs, filters; located on skin surface and in lining of GI tract organs
Epithelium - Answer sheet of cells lining a body surface or body cavity; 2 types are
covering/lining and glandular
Interface tissue protects: - Answer keeps things out of your body
Interface tissue absorption: - Answer lining of small intestine where you absorb
Interface tissue filters: - Answer kidneys and capillaries
Interface tissue excretes: - Answer elimination of waste. When macrophages break
something down (bacteria or protein) they internalize it via endocytosis, digest it, and release it
via exocytosis into the exracellular space.
Interface tissue secretes: - Answer releases something that you produced. Interface tissue
also has sensory reception.
Polarity in epithelium - Answer a) Apical - Top Surface, when looking at skin, we see apical
surface. Always refers to layer that is exposed.
b) Basal - bottom surface (refers to the surface of the cells that are next to basement
membrane)
Basement membrane (lamina propria) - Answer basal lamina & reticular lamina
