Question 1

The apical surface modifications of the cells lining the small intestine contain which of the following proteins?

Accepted Answer

A)  Actin 
B)  Claudin 
C)  Elastin 
D)  Myosin 
E)  Occludin 
A)  Actin 
B)  Claudin 
C)  Elastin 
D)  Myosin 
E)  Occludin A

Question 2

Identify the INCORRECT statement

Accepted Answer

A)  Basal lamina can be divided into the lamina densa and lamina lucida 
B)  Desmosomes are an effective barrier to the diffusion of substances across an epithelium. 
C)  In pseudostratified epithelia all epithelial cells contact the basement membrane. 
D)  The basal lamina can act as a selective filter between the epithelium and the connective tissue. 
E)  Tight junctions between epithelial cells are an effective barrier to the diffusion of substances across an epithelium. 
A)  Basal lamina can be divided into the lamina densa and lamina lucida 
B)  Desmosomes are an effective barrier to the diffusion of substances across an epithelium. 
C)  In pseudostratified epithelia all epithelial cells contact the basement membrane. 
D)  The basal lamina can act as a selective filter between the epithelium and the connective tissue. 
E)  Tight junctions between epithelial cells are an effective barrier to the diffusion of substances across an epithelium. B

Question 3

The type of epithelium that is associated with distensible organs such as the urinary bladder is

Accepted Answer

A)  Pseudostratified columnar 
B)  Simple cuboidal 
C)  Stratified squamous 
D)  Transitional 
E)  None of the above 
A)  Pseudostratified columnar 
B)  Simple cuboidal 
C)  Stratified squamous 
D)  Transitional 
E)  None of the above D

Question 4

Which of the following are important components of axonemes?

Accepted Answer

A)  Actin 
B)  Intermediate filaments 
C)  Microfilaments 
D)  Microtubules 
E)  Myosin 
A)  Actin 
B)  Intermediate filaments 
C)  Microfilaments 
D)  Microtubules 
E)  Myosin

Question 5

Maintaining actin filament length occurs through a process called treadmilling. Which of the following proteins severs actin filaments and then caps the severed end, preventing further polymerization?

Accepted Answer

A)  Cofilin 
B)  Gelsolin 
C)  Phalloidin 
D)  Profilin 
E)  Thymosin 
A)  Cofilin 
B)  Gelsolin 
C)  Phalloidin 
D)  Profilin 
E)  Thymosin

Question 6

During which phase of mitosis does the kinetochore form?

Accepted Answer

A)  Anaphase A 
B)  Anaphase B 
C)  Metaphase 
D)  Prophase 
E)  Telophase 
A)  Anaphase A 
B)  Anaphase B 
C)  Metaphase 
D)  Prophase 
E)  Telophase

Question 7

Through which part of a junctional complex can ions freely flow between adjacent cells?

Accepted Answer

A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions 
A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions

Question 8

Which of the following proteins transports vesicles along neuronal axons?

Accepted Answer

A)  Actin 
B)  Calmodulin 
C)  Kinesin 
D)  Myosin I 
E)  Myosin II 
A)  Actin 
B)  Calmodulin 
C)  Kinesin 
D)  Myosin I 
E)  Myosin II

Question 9

The epithelial specializations most likely to be found in absorptive epithelia are

Accepted Answer

A)  Cilia 
B)  Flagella 
C)  Microtubules 
D)  Microvilli 
E)  Stereocilia 
A)  Cilia 
B)  Flagella 
C)  Microtubules 
D)  Microvilli 
E)  Stereocilia

Question 10

Epithelia that play a protective function and line the esophagus are

Accepted Answer

A)  Pseudostratified columnar 
B)  Simple columnar 
C)  Simple squamous 
D)  Stratified columnar 
E)  Stratified squamous 
A)  Pseudostratified columnar 
B)  Simple columnar 
C)  Simple squamous 
D)  Stratified columnar 
E)  Stratified squamous

Question 11

The portion of the junctional complex primarily responsible for restricting the passage of molecules between adjacent epithelial cells is/are composed of

Accepted Answer

A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions 
A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions

Question 12

Through which part of a junctional complex can ions freely flow between adjacent cells?

Accepted Answer

A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions 
A)  Gap junction 
B)  Hemidesmosomes 
C)  Macula adherens 
D)  Zonula adherens 
E)  Tight junctions

Question 13

Which of the following statements about general features of epithelial tissues is false?

Accepted Answer

A)  Epithelia are generally avascular 
B)  Epithelial tissues are capable of forming ducts and branching 
C)  They form both exocrine and endocrine glands 
D)  They have an extracellular matrix primary composed of Type I collagen fibers 
E)  They are always morphologically bound to underlying connective tissue 
A)  Epithelia are generally avascular 
B)  Epithelial tissues are capable of forming ducts and branching 
C)  They form both exocrine and endocrine glands 
D)  They have an extracellular matrix primary composed of Type I collagen fibers 
E)  They are always morphologically bound to underlying connective tissue

Question 14

Which of the following proteins composes the majority of the basal lamina?

Accepted Answer

A)  Collagen 
B)  Fibrin 
C)  Fibronectin 
D)  Integrin 
E)  Laminin 
A)  Collagen 
B)  Fibrin 
C)  Fibronectin 
D)  Integrin 
E)  Laminin

Question 15

The cell adhesion molecule that binds to both the intracellular cytoskeleton and the extracellular matrix is

Accepted Answer

A)  Cadherin 
B)  Fibronectin 
C)  Integrin 
D)  Laminin 
E)  Selectin 
A)  Cadherin 
B)  Fibronectin 
C)  Integrin 
D)  Laminin 
E)  Selectin

Question 16

What supportive structures are the most stable component of the cytoskeleton?

Accepted Answer

A)  Actin filaments 
B)  Centrosomes 
C)  Intermediate filaments 
D)  Microtubules 
E)  Myosin filaments 
A)  Actin filaments 
B)  Centrosomes 
C)  Intermediate filaments 
D)  Microtubules 
E)  Myosin filaments

Question 17

The surface of the ovaries contains which type of epithelium

Accepted Answer

A)  Pseudostratified columnar 
B)  Simple columnar 
C)  Simple cuboidal 
D)  Simple squamous 
E)  Stratified squamous 
A)  Pseudostratified columnar 
B)  Simple columnar 
C)  Simple cuboidal 
D)  Simple squamous 
E)  Stratified squamous

Question 18

The type of epithelium found lining small capillaries where it modulates diffusion is

Accepted Answer

A)  Simple columnar 
B)  Simple cuboidal 
C)  Simple squamous 
D)  Stratified cuboidal 
E)  Stratified squamous 
A)  Simple columnar 
B)  Simple cuboidal 
C)  Simple squamous 
D)  Stratified cuboidal 
E)  Stratified squamous

Exam 1: Epithelium

The apical surface modifications of the cells lining the small intestine contain which of the following proteins?

Identify the INCORRECT statement

The type of epithelium that is associated with distensible organs such as the urinary bladder is

Which of the following are important components of axonemes?

Maintaining actin filament length occurs through a process called treadmilling. Which of the following proteins severs actin filaments and then caps the severed end, preventing further polymerization?

During which phase of mitosis does the kinetochore form?

Through which part of a junctional complex can ions freely flow between adjacent cells?

Which of the following proteins transports vesicles along neuronal axons?

The epithelial specializations most likely to be found in absorptive epithelia are

Epithelia that play a protective function and line the esophagus are

The portion of the junctional complex primarily responsible for restricting the passage of molecules between adjacent epithelial cells is/are composed of

Through which part of a junctional complex can ions freely flow between adjacent cells?

Which of the following statements about general features of epithelial tissues is false?

Which of the following proteins composes the majority of the basal lamina?

The cell adhesion molecule that binds to both the intracellular cytoskeleton and the extracellular matrix is

What supportive structures are the most stable component of the cytoskeleton?

The surface of the ovaries contains which type of epithelium

The type of epithelium found lining small capillaries where it modulates diffusion is

Epithelial Glands

Cell Signaling

Connective Tissue

Osteogenesis

Blood and Hematopoiesis

Muscle Tissue

Nervous Tissue

Sensory Organs: Vision and Hearing

Immune-Lymphatic System

Integumentary System

Cardiovascular System

Respiratory System

Urinary System

Upper Digestive Segment

Lower Digestive Segment

Digestive Glands

Neuroendocrine System

Endocrine System

Spermatogenesis

Sperm Transport and Maturation

Follicle Development and the Menstrual Cycle

Fertilization, Placentation, and Lactation

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