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Match the terms in the word bank with the labeled structures on the diagram.Briefly define the function of each structure: axon,nucleus,cell body,dendrite,myelin sheath. Match the terms in the word bank with the labeled structures on the diagram.Briefly define the function of each structure: axon,nucleus,cell body,dendrite,myelin sheath.

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Which of the following functions performed by the skin would be lost or seriously compromised if someone suffered a severe burn over most of the body?


A) prevention of heat and water loss
B) prevention of massive and continuous infection from invasion by external bacteria,viruses,and parasites
C) production of sweat that evaporates and cools the body when it is overheating
D) conversion,in the presence of ultraviolet light,of precursor molecules to vitamin D
E) All of these are vital functions of the skin and would be compromised.

F) A) and B)
G) A) and C)

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E

Which statement about connective tissue is NOT true?


A) Loose connective tissue contains fibroblasts,different types of fiber,and a nonliving matrix.
B) Fibrous connective tissue includes bone and cartilage.
C) Blood is a connective tissue that contains a fluid matrix.
D) Adipose tissue provides insulation and padding in organs such as the skin.

E) B) and C)
F) A) and D)

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Which organ system does not play a role in acquiring materials and energy?


A) cardiovascular
B) skeletal
C) muscular
D) digestive

E) B) and C)
F) A) and C)

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Snakes,frogs,squirrels and humans are all classified as being homeothermic.

A) True
B) False

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An average person has about _____ neurons.


A) 100,000
B) 1 trillion
C) 2 million
D) 1 billion

E) C) and D)
F) B) and D)

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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


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) C) and D)
G) A) and C)

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Which is NOT a structure seen in compact bone?


A) cylindrical structural units called osteons (Haversian systems)
B) central canals containing blood vessels and nerves
C) osteocytes located within lacunae
D) bony bars and plates with irregular spaces between them
E) thin extensions of bone cells within canaliculi

F) A) and C)
G) None of the above

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


A) cardiovascular system
B) brain
C) columnar epithelium
D) heart
E) lungs

F) All of the above
G) A) and E)

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A

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


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 above systems / organs are correctly matched with their role in maintaining homeostasis.

F) None of the above
G) A) and E)

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Stratified epithelium is composed of multiple layers of flattened cells that can often be found in the lining of blood vessels.

A) True
B) False

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At one time it was thought impossible to operate within the body cavities.But then the Canadian doctor William Beaumont operated on a gunshot wound to the stomach.A few decades later we saw breakthroughs in heart operations and transplants.And the 1990s were called the decade of the brain because of the extensive research being done on how the brain functions.The order in which these discoveries were made,by cavity,are


A) abdominal-thoracic-dorsal.
B) abdominal-dorsal-thoracic.
C) dorsal-thoracic-abdominal.
D) thoracic-abdominal-dorsal.
E) thoracic-dorsal-abdominal.

F) B) and D)
G) A) and B)

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A

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


A) Neurons
B) Neuroglia
C) Nerves
D) Intercalated disks
E) Hyaline cartilage

F) A) and C)
G) B) and D)

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

A) True
B) False

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Homeostasis is the


A) negative feedback loop that stimulates a response similar to the stimulus.
B) dynamic interplay between events that tend to change the external environment and events that tend to keep it the same.
C) the acquisition,transformation and use of energy.
D) maintenance of normal internal conditions by means of self-regulating mechanisms.

E) B) and C)
F) A) and D)

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


A) muscle tissue
B) nervous tissue
C) epithelial tissue
D) connective tissue

E) A) and B)
F) A) and C)

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What type of tissue is responsible for contractions that account for movements of organs or the entire body?


A) muscle tissue
B) nervous tissue
C) epithelial tissue
D) connective tissue

E) C) and D)
F) A) and D)

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Homeostasis is ultimately controlled by the nervous system.

A) True
B) False

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


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

F) A) and D)
G) C) and D)

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Which statement is NOT true about cartilage?


A) Cartilage cells are located in small spaces called lacunae.
B) The matrix of cartilage includes calcium salts.
C) The matrix of cartilage is both solid and flexible.
D) The human fetal skeleton is made up of cartilage.
E) Adult bodies possess structures that are made up of cartilage such as the nose,ear,and pads between the vertebrae in the backbone.

F) B) and E)
G) All of the above

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