Lecture Exam 2

A  the fluid reabsorbed into the capillary exactly matches the amount filtered by the capillary.

B  more fluid is filtered than reabsorbed.

C  more fluid is absorbed and reabsorbed than is filtered.

A  get larger.

B  show no change in their lumen size.

C  get smaller.

A  vasoconstriction so that they function as blood reservoirs.

B  vasodilation so that they function as blood reservoirs.

C  vasodilation so that blood is shifted toward the rest of the circulatory system.

D  vasoconstriction so that blood is shifted toward the rest of the circulatory system.

A  lymphatic cells, extracellular matrix, and an incomplete connective tissue capsule.

B  a hilum that is located intermediate to two lobules.

C  central arteries and monocytes.

D  crypts, trabeculae, and Reed-Sternberg cells.

E  afferent vessels, efferent vessels, a cortex, and medulla.

A  similar

B  opposite

A  in the blood.

B  in the lymph.

C  secreted by salivary glands.

D  ingested or inhaled.

A  TRUE

B  FALSE

A  Mast cells

B  Dendritic cells

C  Cytokines

D  NK cells

E  Alveolar macrophages

A  vasoconstriction, sodium retention, and therefore increased blood pressure.

B  vasoconstriction, decreased urine output, and therefore decreased blood pressure.

C  vasodilation, decreased urine output, and therefore increased blood pressure.

D  vasoconstriction, increased urine output, and therefore increased blood pressure.

E  vasodilation, increased urine output, and therefore decreased blood pressure.

A  includes a functional end artery that makes an arterial anastomosis.

B  is a simple circulatory system with an arteriovenous anastomosis.

C  is one in which circulation to a large organ involves only one artery and one main (portal) vein.

D  is one in which multiple arteries converge on one organ or body region.

E  is one in which blood flows through two capillary beds before being sent back to the heart.

A  osmosis.

B  diffusion of both water and solutes.

C  exocytosis.

D  hydrostatic pressure.

E  endocytosis.

A  increases

B  will not affect

C  decreases

A  allow for diffusion of nutrients and metabolic wastes.

B  allow for diffusion of nutrients to the tissues.

C  supply metarteriole with blood.

D  drain the capillary bed.

E  allow for diffusion of metabolic wastes from the tissues.

A  interferon

B  histamine

C  perforin

D  serotonin

E  complement

A  innate; attackers of pathogenic cells

B  adaptive; physical barriers to pathogen entry

C  innate; physical barriers to pathogen entry

D  adaptive; attackers of pathogenic cells

A  simple pathway, as its two capillary beds are separated by a portal vein.

B  anastomosis, as one artery delivers blood and one vein drains the organ.

C  anastomosis, as its two capillary beds are separated by a portal vein.

D  simple pathway, as one artery delivers blood and one vein drains the organ.

A  capillaries and veins

B  capillaries and arteries

C  arteries

D  veins

E  capillaries

A  Its cells are arranged in clusters that are circular in shape.

B  It contains a central artery.

C  Its cells include T-lymphocytes, B-lymphocytes, and macrophages.

D  It serves as a blood reservoir.

A  the proteins in the blood, and it promotes filtration.

B  the high amount of water in the blood, and it promotes diffusion out of the capillaries.

C  the high amount of water in the blood, and it promotes filtration from arterioles.

D  the proteins in the blood, and it promotes reabsorption.

E  the pressure generated by the heart, and it favors osmosis into the arteriole end of the capillary bed.

A  Eosinophils

B  Neutrophils

C  Macrophages

D  Basophils

E  Natural killer cells

A  2; anterior to the laryngeal prominence (Adam’s apple)

B  4; in the mediastinum

C  2; in the mediastinum

D  4; anterior to the laryngeal prominence (Adam’s apple)

A  decreases, as blood hydrostatic pressure decreases.

B  increases, as blood hydrostatic pressure rises.

C  remains the same, as rises in blood osmotic pressure are offset by declines in tissue osmotic pressure.

D  increases, as blood colloid osmotic pressure rises.

E  decreases, as blood colloid osmotic pressure decreases.

A  50 mmHg.

B  40 mmHg.

C  5/3.

D  125 mmHg.

E  100 mmHg.

A  sustained decrease in resistance that leads to decreases in arterial pressure to maintain adequate blood flow.

B  sustained increase in blood flow that leads to decreases in venous resistance to keep blood pressure constant.

C  sustained increase in blood pressure that leads to compensatory vasodilation.

D  sustained increase in resistance that leads to increases in arterial pressure to maintain adequate blood flow.

E  sustained decrease in blood flow that leads to increases in arterial diameter to lower resistance and raise pressure.

A  tunica interna

B  tunica intima

C  None of the answers is correct.

D  tunica externa

E  tunica media

A  Filtration dominates at the arterial end of a capillary bed, and is driven by hydrostatic pressure.

B  Filtration dominates at the arterial end of a capillary bed, and is driven by osmotic pressure.

C  Filtration dominates at the venous end of a capillary bed, and is driven by hydrostatic pressure.

D  Filtration dominates at the venous end of a capillary bed, and is driven by osmotic pressure.

A  monocytes.

B  T-lymphocytes.

C  neutrophils.

D  macrophages.

E  B-lymphocytes.

A  It is divided into sections by capsular extensions called trabeculae.

B  It has an outer cortex and inner medulla.

C  Its white pulp contains T-lymphocytes, B-lymphocytes, and macrophages.

D  Its blood is supplied by the splenic artery and drained by the splenic vein.

A  afferent lymphatic vessel.

B  cisterna chyli.

C  lacteal.

D  trabeculum.

E  efferent lymphatic vessel.

A  cells migrate along chemical gradients.

B  CAMs on leukocytes adhere to CAMs on endothelial cells of capillaries within injured tissues.

C  chemical messengers are secreted that stimulate the sensation of pain that accompanies inflammation.

D  cells exit the blood by squeezing out between cells in the blood vessel wall.

A  Elastic and muscular arteries

B  Elastic arteries

C  Elastic arteries and arterioles

D  Arterioles

E  Muscular arteries

A  In removing the breast, the blood supply to the nodes is removed and they will inevitably cease to function.

B  It is impossible to remove the breast without physically damaging the lymph nodes.

C  The axillary lymph nodes receive lymph from the breast and may contain cancer cells.

D  With the removal of the breast, there is no further need for lymph drainage and filtering in that part of the body.

E  The nerves that supply the axillary lymph nodes are often cut during the breast surgery.

A  increases the further the vessel is from the heart.

B  is called the pulse.

C  is called the blood pressure.

D  is greater during diastole.

E  is greater in the inferior vena cava than in the common iliac vein.

A  All of the answers are correct.

B  open when the tissue needs nutrients.

C  control blood flow into the true capillaries.

D  close when the tissue’s needs have been met.

E  cause blood to flow directly from the metarteriole into the postcapillary venule.

A  Thyroid gland

B  Thymus gland

C  Spleen

D  White bone marrow

E  Tonsils

A  Filtration is driven by concentration gradients, whereas reabsorption depends on hydrostatic pressure.

B  Filtration happens at the venule end of a capillary bed and reabsorption happens in feeder arterioles.

C  The direction of filtration can be either into or out of the blood, but reabsorption always involves fluids entering the blood.

D  Filtration involves bulk flow of fluid out of the blood, whereas reabsorption is bulk flow back into the blood.

A  b, c, d, g

B  b, c, e, f

C  f, g

D  c, d

E  a, b, e

A  b, d, e, f

B  a, b, d, e, f

C  a, d, f

D  a, c, d, e, f

E  a, b, d, f

A  Whole blood

B  Intracellular fluid

C  Blood plasma

D  Interstitial fluid

A  antigen-specific process that occurs in vascularized tissue.

B  nonspecific process that occurs in vascularized tissue.

C  antigen-specific process that occurs in avascular tissue.

D  nonspecific process that occurs in avascular tissue.

A  cause venous blood flow to go in only one direction.

B  are found only in the largest veins.

C  are the leading cause of high blood pressure.

D  are formed of the tunica media.

E  make the use of a skeletal muscle pump unnecessary for venous blood flow.

A  fenestrated arteries

B  companion vessels

C  distributing arteries

D  thoroughfare channels

E  vasa vasorum

A  TRUE

B  FALSE

A  Vertebrae

B  Long bones of digits

C  Flat bones of the skull

D  Sternum

E  Ribs

A  be lower than normal.

B  be higher than normal.

A  Capsule

B  Cortex

C  Trabecula

D  Medulla

A  a decrease in the relative amount of smooth muscle and an increase in the relative amount of elastic fibers.

B  a decrease in both smooth muscle and elastic fibers and an increase in areolar connective tissue.

C  an increase in the relative amount of smooth muscle and a decrease in the relative amount of elastic fibers.

D  an increase in relative amounts of smooth muscle and elastic fibers and a decrease in endothelium.

A  adaptive immunity.

B  innate immunity.

C  acquired immunity.

D  cell-mediated immunity.

A  deep thoracic structures.

B  upper limbs, breasts, and superficial thorax.

C  abdominopelvic wall.

D  head and neck.

A  TRUE

B  FALSE