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Which cells aid in the operation of the nervous system but are unable to conduct nerve impulses?


A) neurons
B) intercalated disks
C) goblet cells
D) neuroglia

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

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A couple is having difficulty conceiving a child,and they decide to see a fertility specialist.Which two organ systems will the specialist examine in this couple?


A) reproductive and nervous systems
B) endocrine and urinary systems
C) reproductive and endocrine systems
D) reproductive and urinary systems

E) None of the above
F) All of the above

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A friend asks you how exocrine glands differ from endocrine glands.She knows that both form from invaginated epithelium.How do you respond?


A) Exocrine and endocrine glands are essentially the same,both produce products that are secreted to the skin's surface.
B) Exocrine glands produce hormones which enter the blood stream,while endocrine glands secrete sweat and oil directly to the surface of the skin.
C) Endocrine glands produce hormones which enter the blood stream,while exocrine glands secrete sweat and oil directly to the surface of the skin.
D) Exocrine glands are found in the thoracic cavity while endocrine glands are located in the pleural cavity.
E) The liver is an endocrine gland that secretes directly into epithelial tissues.The pituitary gland is an exocrine gland that secretes into the blood stream.

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

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Which of these thermoregulation processes can be sustained for the longest period of time?


A) shivering
B) sweating
C) nonshivering thermogenesis
D) hibernation
E) fever

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

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Mechanisms that help generate heat and those that allow release of heat are an example of ________.Collectively,these mechanisms increase the ________ of body temperature.


A) endothermic regulation; flexibility
B) poikilothermic regulation; stability
C) ectothermic regulation; flexibility
D) antagonist effectors; stability

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

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The cell body of a motor neuron resides in the spinal cord,but it may control muscles a long distance away.In a giraffe,the ________ of a leg motor neuron may be six feet long!


A) dendrite
B) soma
C) axon
D) node of Ranvier

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

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What are epithelial cells with a flat,irregular shape and tapered edges called?


A) columnar
B) pseudostratified
C) squamous
D) cuboidal
E) stratified

F) A) and E)
G) A) and B)

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Which is another name for bone cells that remain alive even after the extracellular matrix becomes hardened with calcium phosphate crystals?


A) osteocytes
B) erythrocytes
C) leukocytes
D) fibrocytes
E) chrondrocytes

F) B) and D)
G) D) and E)

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The axon of a neuron can only communicate with other neuronal cells.

A) True
B) False

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Which of the following are the fundamental embryonic tissues called the "germ layers"?


A) tissues,organs,and organ systems
B) mesoderm,muscle,and tissue
C) ectoderm,endoderm,and exoskeleton
D) mesoderm,endoderm,and ectoderm
E) mesoderm,exoderm,and hydroderm

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

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Which of the following types of muscles are striated?


A) skeletal and smooth
B) cardiac only
C) triceps and biceps only
D) skeletal and cardiac
E) skeletal,smooth,and cardiac

F) D) and E)
G) C) and D)

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When we watch Olympic athletes perform,we are admiring the expert control of which systems working together?


A) skeletal,endocrine,and circulatory systems
B) nervous,circulatory,and skeletal systems
C) muscular,integumentary,and circulatory systems
D) nervous,muscular,and skeletal systems

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

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Where is the nucleus of a neuron found?


A) axon branches
B) companion cell
C) cell body
D) dendrites
E) myelin sheath

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

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What feature of cardiac muscle helps the cells coordinate their contraction as a single unit?


A) fused cells with multiple nuclei
B) covalent bonds between actin and myosin molecules
C) intercalated disks rich in gap junctions
D) large numbers of motor neurons

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

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Some animals allow their body temperature to conform to the environment.What is the old term for these animals,and what is the newer preferred term?


A) heterotherms; homeotherms
B) homeotherms; endotherms
C) isotherms; poikilotherms
D) poikilotherms; ectotherms
E) endotherms; homeostats

F) D) and E)
G) B) and E)

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Which type of cells line the lungs and blood vessels?


A) simple squamous epithelium
B) simple cuboidal epithelium
C) simple columnar epithelium
D) stratified squamous epithelium
E) keratinized squamous epithelium

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

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To diagnose and treat a disease,a doctor must evaluate the patient's body at multiple levels of organization.Identify the level of organization relevant to each stage of the process described below. (1) As part of Fred's annual physical,the doctor examined his skin,fingernails and hair for signs of disease.Noticing an unusual lesion on his neck,the doctor referred Fred to a dermatologist. (2) Upon observing the lesion,the dermatologist said,"Yes,this looks like it could be a squamous cell carcinoma,a tumor in the epidermis of the skin." (3) The dermatologist carefully examined all of Fred's skin for signs of additional tumors,but did not find any. (4) The dermatologist removed the lesion and sent it for a biopsy.Under the microscope,the pathologist saw some cells with abnormal morphology and confirmed a diagnosis of squamous cell carcinoma.However,he noted that the margins of the lesion were clear of abnormal cells,and the tumor had been successfully removed.


A) organism,cell,tissue,organ
B) organ system,tissue,organ,cell
C) organ system,organ,tissue,cell
D) organism,cell,organ system,tissue

E) None of the above
F) B) and D)

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You are an engineer at a power plant that creates large volumes of hot waste water,which disrupts the ecosystem of the river it drains into.Another part of the plant requires warm oil,and the plant uses large amounts of energy to heat it.Inspired by countercurrent exchange in whales,you save energy and benefit the environment by


A) running the oil pipes under the river after dumping in the hot waste water
B) running the oil pipes around the waste water pipes,to allow heat transfer from water to oil
C) running the waste water and oil through a single pipe
D) adding a sensor,integrating center and effectors to control temperature in both pipes

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

Correct Answer

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You are researching a family with a heritable disease whose symptoms include hyper-flexible joints,pliable skin,stretchy ligaments,and fragile muscles that tear easily.You plan to use genetic testing to determine the cause of the disease.Which gene do you sequence first?


A) actin
B) epidermal growth factor
C) myosin II heavy chain
D) collagen

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

Correct Answer

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The most abundant protein in mammals is collagen.This strong,ropelike molecule is particularly abundant in which tissue?


A) heart muscle
B) spinal cord
C) ligaments
D) skeletal muscle

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

Correct Answer

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