Question 1

What are the main features of melanocytes?

Accepted Answer

A)   Melanocytes are found in the dermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells.
B)   Melanocytes are found in the epidermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells.
C)   Melanocytes are found in the epidermis and they produce melanin when exposed to UV light. The melanin is then distributed to dermal cells.
D)   Melanocytes are found in the hypodermis and they produce melanin when exposed to UV light. The melanin is then distributed to epidermal cells.E) All of the above
F) A) and B)

Question 2

Which of the following skin derivatives is mismatched with the organism on which it is found?

Accepted Answer

A)   mammals - hair and nails
B)   amphibians - epidermal scales
C)   fishes - bony scales
D)   birds - feathersE) A) and B)
F) A) and C)

Question 3

______ make up more than half the volume of the brain.

Accepted Answer

A)   Neurons
B)   Neuroglia
C)   Nerves
D)   Intercalated disks
E)   Hyaline cartilageF) None of the above
G) A) and E)

Question 4

The epidermis consists of

Accepted Answer

A)   stratified squamous epithelial cells.
B)   collagen fibers.
C)   elastic fibers.
D)   adipose tissue.E) None of the above
F) A) and B)

Question 5

What tissue type is characterized by being a transport medium for nutrients and also includes blood and adipose tissues?

Accepted Answer

A)   muscle tissue
B)   nervous tissue
C)   epithelial tissue
D)   connective tissueE) A) and B)
F) C) and D) D

Question 6

Skeletal muscle

Accepted Answer

A)   is made of extremely small cells with one nucleus.
B)   is not under voluntary control.
C)   is found in the walls of the intestines and stomach.
D)   has bands of actin and myosin filaments perpendicular to the length of the cell that produce contractions.E) A) and B)
F) All of the above

Question 7

The production of red blood cells is regulated by a feedback loop involving erythropoietin. In non-disease states, the production of red blood cells is equal to the destruction of red blood cells, thus maintaining sufficient red blood cells to deliver adequate oxygen to the body's tissues. However, when the number of red blood cells decrease and oxygen levels are low, erythropoietin is produced by the liver and kidneys to increase the production of red blood cells. Is this a positive or negative feedback loop? Explain your answer.

Accepted Answer

This is an example of a negative feedbac...

Question 8

Which of the following systems / organs are incorrectly matched with its role in maintaining homeostasis?

Accepted Answer

A)   Digestive system - provides nutrient molecules to the cells.
B)   Respiratory system - transports oxygen and carbon dioxide to the cells throughout the body.
C)   Liver - removes excess glycogen from the blood and stores it as glucose.
D)   Pancreas secretes insulin when the body has an elevated blood glucose level.
E)   All of the systems / organs listed are correctly matched with their role in maintaining homeostasis.F) B) and D)
G) B) and C)

Question 9

Which of the following statements concerning homeostasis in body temperature is NOT true? The body reacts to

Accepted Answer

A)   heat by stimulating the sweat glands.
B)   cold by contracting skeletal muscles in shivering.
C)   cold by rerouting blood away from the skin.
D)   heat by constricting the blood vessels in the skin.
E)   All of the statements are not true.F) A) and D)
G) A) and C)

Question 10

List the major life process that each of the following organ systems carries out: urinary, lymphatic, nervous, and cardiovascular.

Accepted Answer

Urinary system is responsible for eliminating wastes. Lymphatic system is responsible for protecting the body from pathogens. Nervous system is responsible for coordinating body activities. Cardiovascular system is responsible for transporting materials within the bloodstream.

Question 11

The level of carbon dioxide in the blood is monitored by nerve tissue. If you exercise strenuously, the increase in cellular respiration consumes oxygen from the blood and produces surplus carbon dioxide removed in the blood. Since this physical exertion requires faster breathing to replenish oxygen supplies and carry away carbon dioxide, the carbon dioxide sensors result in signals from the brain to increase breathing rate. After you have rested, and carbon dioxide levels are back to normal, your breathing rate decreases too. This is an example of

Accepted Answer

A)   a response to a sensory impulse that causes a muscle or gland to react.
B)   a negative feedback loop that stimulates a response similar to the stimulus.
C)   a positive feedback loop that stimulates a response opposite to the stimulus.
D)   the dynamic interplay between events that tend to change the internal environment and events that tend to keep it the same.
E)   the dynamic interplay between events that tend to change the internal environment and events that tend to increase the changes.F) A) and C)
G) A) and E)

Question 12

Both the neural and endocrine systems play a role in coordinating body activities.

Accepted Answer

A) True 
 B)False

Question 13

In lactation, the more a baby suckles his mother's breast to obtain milk, the more milk is produced. This is a

Accepted Answer

A)   positive feedback loop.
B)   a negative feedback loop. This is an example of a positive feedback loop, a mechanism that brings about an ever greater change in the same direction.C) A) and B)
D) undefined A

Question 14

What type of tissue lines body cavities and covers body surfaces?

Accepted Answer

A)   muscle tissue
B)   nervous tissue
C)   epithelial tissue
D)   connective tissueE) B) and C)
F) A) and D)

Question 15

Which of the following statements about epithelial tissue is NOT true?

Accepted Answer

A)   Squamous epithelium is composed of flattened cells.
B)   Columnar epithelium is cube-shaped with the nucleus near the upper surface of the cells.
C)   Simple epithelia have only a single layer of cells.
D)   Pseudostratified epithelium looks like it has multiple layers, but all the cells are attached to the basement membrane.
E)   Epithelium lining the respiratory tract contains cilia that move particles along its surface.F) B) and D)
G) A) and E)

Question 16

White blood cells fight infection by

Accepted Answer

A)   transporting large amounts of oxygen to the infected area.
B)   engulfing infectious pathogens and making antibodies.
C)   increasing platelet production and forming a plug to seal off the area.
D)   producing antibiotics that will kill bacteria and fungi.E) B) and C)
F) A) and D)

Question 17

List the four primary tissue types found in the human body and indicate their main function(s).

Accepted Answer

1. Epithelial tissue: covers body surfac...

Question 18

Which of the following is the most complex level of organization?

Accepted Answer

A)   cardiovascular system
B)   brain
C)   columnar epithelium
D)   heart
E)   lungsF) All of the above
G) None of the above

Question 19

A thin layer of protein, within epithelial tissue, that anchors the epithelium to the extracellular matrix is the

Accepted Answer

A)   basement membrane.
B)   plasma membrane.
C)   compact bone.
D)   hyaline cartilage.
E)   neuroglia.F) D) and E)
G) A) and D)

Question 20

What type of fiber accounts for the strength of various connective tissues?

Accepted Answer

A)   elastic
B)   collagen
C)   actin
D)   reticularE) A) and B)
F) A) and C)

Exam 31: Animal Organization and Homeostasis

What are the main features of melanocytes?

Correct Answer
verified

Which of the following skin derivatives is mismatched with the organism on which it is found?

Correct Answer
verified

______ make up more than half the volume of the brain.

Correct Answer
verified

The epidermis consists of

Correct Answer
verified

What tissue type is characterized by being a transport medium for nutrients and also includes blood and adipose tissues?

Correct Answer
verified
D

Skeletal muscle

Correct Answer
verified

Correct Answer
verified
This is an example of a negative feedbac...
View Answer

Which of the following systems / organs are incorrectly matched with its role in maintaining homeostasis?

Correct Answer
verified

Which of the following statements concerning homeostasis in body temperature is NOT true? The body reacts to

Correct Answer
verified

List the major life process that each of the following organ systems carries out: urinary, lymphatic, nervous, and cardiovascular.

Correct Answer
verified

Both the neural and endocrine systems play a role in coordinating body activities.

Correct Answer
verified

In lactation, the more a baby suckles his mother's breast to obtain milk, the more milk is produced. This is a

Correct Answer
verified
A

What type of tissue lines body cavities and covers body surfaces?

Correct Answer
verified

Which of the following statements about epithelial tissue is NOT true?

Correct Answer
verified

White blood cells fight infection by

Correct Answer
verified

List the four primary tissue types found in the human body and indicate their main function(s).

Correct Answer
verified
1. Epithelial tissue: covers body surfac...
View Answer

Which of the following is the most complex level of organization?

Correct Answer
verified

A thin layer of protein, within epithelial tissue, that anchors the epithelium to the extracellular matrix is the

Correct Answer
verified

What type of fiber accounts for the strength of various connective tissues?

Correct Answer
verified

Exam 31: Animal Organization and Homeostasis

What are the main features of melanocytes?

Correct AnswerverifiedShow Answer

Which of the following skin derivatives is mismatched with the organism on which it is found?

Correct AnswerverifiedShow Answer

______ make up more than half the volume of the brain.

Correct AnswerverifiedShow Answer

The epidermis consists of

Correct AnswerverifiedShow Answer

What tissue type is characterized by being a transport medium for nutrients and also includes blood and adipose tissues?

Correct AnswerverifiedD

Skeletal muscle

Correct AnswerverifiedShow Answer

Correct AnswerverifiedThis is an example of a negative feedbac...View AnswerShow Answer

Which of the following systems / organs are incorrectly matched with its role in maintaining homeostasis?

Correct AnswerverifiedShow Answer

Which of the following statements concerning homeostasis in body temperature is NOT true? The body reacts to

Correct AnswerverifiedShow Answer

List the major life process that each of the following organ systems carries out: urinary, lymphatic, nervous, and cardiovascular.

Correct AnswerverifiedUrinary system is responsible for eliminating wastes. Lymphatic system is responsible for protecting the body from pathogens. Nervous system is responsible for coordinating body activities. Cardiovascular system is responsible for transporting materials within the bloodstream.

Correct AnswerverifiedShow Answer

Both the neural and endocrine systems play a role in coordinating body activities.

Correct AnswerverifiedShow Answer

In lactation, the more a baby suckles his mother's breast to obtain milk, the more milk is produced. This is a

Correct AnswerverifiedA

What type of tissue lines body cavities and covers body surfaces?

Correct AnswerverifiedShow Answer

Which of the following statements about epithelial tissue is NOT true?

Correct AnswerverifiedShow Answer

White blood cells fight infection by

Correct AnswerverifiedShow Answer

List the four primary tissue types found in the human body and indicate their main function(s).

Correct Answerverified1. Epithelial tissue: covers body surfac...View AnswerShow Answer

Which of the following is the most complex level of organization?

Correct AnswerverifiedShow Answer

A thin layer of protein, within epithelial tissue, that anchors the epithelium to the extracellular matrix is the

Correct AnswerverifiedShow Answer

What type of fiber accounts for the strength of various connective tissues?

Correct AnswerverifiedShow Answer

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D

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This is an example of a negative feedbac...
View Answer

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A

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1. Epithelial tissue: covers body surfac...
View Answer

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