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Can you help me with my practice questions: 6 Which of the following statements about albumin is true?

Can you help me with my practice questions:


6


Which of the following statements about albumin is true?

a.       It draws water out of the blood vessels and into the body's tissues.

b.      It is the most abundant plasma protein.

c.       It is produced by specialized leukocytes called plasma cells.

d.      All of the above are true.


Which of the following statements about mature, circulating erythrocytes is true?

a.       They have no nucleus.

b.      They are packed with mitochondria.

c.       They survive for an average of 4 days.

d.      All of the above


The process by which leukocytes squeeze through adjacent cells in a blood vessel wall is called ________.

a.       leukocytosis

b.      positive chemotaxis

c.       emigration

d.      cytoplasmic extending


Which of the following describes a neutrophil?

a.       abundant, agranular, especially effective against cancer cells

b.      abundant, granular, leukocytes

c.       rare, agranular, releases antimicrobial defensins

d.      rare, granular, contains multiple granules packed with histamine


Thrombocytes are more accurately called ________.

a.       clotting factors

b.      megakaryoblasts

c.       megakaryocytes

d.      platelets


Which of the following statements about mature, circulating erythrocytes is true?

a.       They have no nucleus.

b.      They are packed with mitochondria.

c.       They survive for an average of 4 days.

d.      All of the above


Aging and damaged erythrocytes are removed from the circulation by ________.

a.       myeoblasts

b.      monocytes

c.       macrophages

d.      mast cells


ABO blood types are determined by ____________ on the plasma membranes of blood cells.

a.       carbohydrates

b.      ions

c.       lipids

d.      glycolipids

e.       steroids


The ________ circuit is between the heart and lungs.

a.       cardiac

b.      coronary

c.       hepatic

d.      lymphatic

e.       pulmonary


The SA node is located in the wall of the

a.       aorta.

b.      left atrium.

c.       left ventricle.

d.      right atrium.

e.       right ventricle.


The QRS wave of the ECG represents

a.       atrial contraction.

b.      atrial relaxation.

c.       firing of the SA node.

d.      ventricular contraction.

e.       ventricular relaxation.


The sphygmomanometer measures

a.       blood cell concentrations.

b.      blood pressure.

c.       heart electrical activity.

d.      heart size.

e.       valve activity.


Valves are found in the

a.       arteries and arterioles.

b.      arterioles and capillaries.

c.       heart and veins.

d.      heart and capillaries.

e.       veins and arterioles.


The ________ circuit is between the heart and the rest of the body.

a.       cardiac

b.      coronary

c.       hepatic

d.      lymphatic

e.       systemic


Blood leaves the heart via the

a.       left atrium.

b.      aorta.

c.       right atrium.

d.      right ventricle.

e.       valves.


Blood flow in the veins, back to the heart, is achieved by

a.       the movement of skeletal muscles.

b.      increased blood pressure from the heart.

c.       the movement of smooth muscles.

d.      pressure from the lymphatic system.

e.       air pressure.


Which chamber initially receives blood from the systemic circuit?

a.       left atrium

b.      left ventricle

c.       right atrium

d.      right ventricle


In a blood pressure measurement of 110/70, the number 70 is the ________.

a.       systolic pressure

b.      diastolic pressure

c.       pulse pressure

d.      mean arterial pressure

e.       none of the above


The most extensive, branching blood vessels are the

a.       arterioles.

b.      arteries.

c.       capillaries.

d.      veins.

e.       venules.


Elastic and muscular refer to different kinds of

a.       arteries.

b.      capillaries.

c.       heart chambers.

d.      valves.

e.       veins.


Which of the following cells would be most active in early, antiviral immune responses the first time one is exposed to pathogen?

a.       macrophage

b.      B cell

c.       T cell

d.      neutrophil

e.       natural killer cell


Which of the lymphoid nodules is most likely to see food antigens first?

a.       tonsils

b.      Peyer's patches

c.       bronchus-associated lymphoid tissue

d.      mucosa-associated lymphoid tissue

e.       lymph nodes


T and B lymphocytes ________.

a.       are polymorphonuclear

b.      are involved with specific immune function

c.       proliferate excessively in leukopenia

d.      are most active against parasitic worms

e.       are responsible for the innate immune response


Why do we have natural antibodies?

a.       We don't know why.

b.      immunity to environmental bacteria

c.       immunity to transplants

d.      from clonal selection

e.       immunization


Vaccines

a.       include just the genetic code of the virus.

b.      directly destroy viruses or bacteria.

c.       cause autism.

d.      create passive immunity.

e.       create active immunity.


The adaptive immune response includes

a.       humoral immunity.

b.      cell-mediated immunity.

c.       macrophage action

d.      humoral immunity and cell-mediated immunity.

e.       none of the above.


Emphysema mainly affects the ________ of the lungs.

a.       alveoli

b.      bronchioles

c.       mucosa

d.      trachea

e.       villi


The function of the alveoli is

a.       air storage.

b.      blood production.

c.       carbon dioxide destruction.

d.      gas exchange.

e.       oxygen production.


The inner walls of the bronchus have

a.       mucous membranes with cilia.

b.      mucous membranes without cilia.

c.       serous membranes with cilia.

d.      serous membranes without cilia.

e.       synovial membranes with cilia.


The two most abundant gases of inhaled air are

a.       carbon dioxide and nitrogen.

b.      carbon dioxide and oxygen.

c.       carbon monoxide and nitrogen.

d.      nitrogen and oxygen.

e.       nitrogen and sulfur dioxide.


There are an estimated ________ million alveoli per lung.

a.       20

b.      50

c.       80

d.      100

e.       150


Oxygen and carbon dioxide are transported through the alveolar wall by

a.       active transport. 

b.      diffusion. 

c.       endocytosis.

d.      exocytosis.

e.       pulmonary transport.


Tidal volume is the amount of air drawn in and out during

a.       passive breathing.

b.      heavy breathing.

c.       shallow breathing.

d.      maximum inspiration.

e.       none of the above.


The human nervous system controls everything except for

a.      control of homeostasis.

b.     muscle control and coordination.

c.      release and transport of hormones.

d.     learning.

e.      memory.


Terminal boutons are part of the ________ of a neuron.

a.      axon

b.     cell

c.      dendrite

d.     myelin sheath

e.      node


Multiple sclerosis develops by the destruction of the

a.      myelin sheath.

b.     neurotransmitter.

c.      receptors.

d.     synapses.

e.      ventricles.


The nodes of Ranvier are interruptions in the

a.      axon cytoplasm.

b.     dendritic endings.

c.      myelin sheath.

d.     number of receptor cells.

e.      synaptic junctions.


A synapse involves each of the following except the

a.      glial cell covering.

b.     postsynaptic membrane.

c.      presynaptic membrane.

d.     synaptic cleft.

e.      terminal bouton.


The main neurotransmitter that excites skeletal muscles is

a.      acetylcholine.

b.     dopamine.

c.      epinephrine.

d.     GABA.

e.      norepinephrine.


The largest part of the brain is the

a.      cerebellum.

b.     cerebrum.

c.      hypothalamus.

d.     medulla.

e.      thalamus.

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