Final Exam - Chapter 21

60 Questions | By Relsing | Updated: Mar 22, 2022 | Attempts: 116

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1.

The only lymphatic organ with both afferent and efferent lymphatic vessels is
- A.
  
  The spleen
- B.
  
  A lymph node
- C.
  
  A tonsil
- D.
  
  A Peyer patch
- E.
  
  The thymus
2.

Which of the following cells are involved in nonspecific resistance but not in specific defense?
- A.
  
  Helper T cells
- B.
  
  Cytotoxic T cells
- C.
  
  Natural killer cells
- D.
  
  B cells
- E.
  
  Plasma cells
3.

The respiratory burst is used by ______ to kill bacteria
- A.
  
  Neutrophils
- B.
  
  Basophils
- C.
  
  Mast cells
- D.
  
  NK cells
- E.
  
  Cytotoxic T cells
4.

Which of these is a macrophage?
- A.
  
  A microglial cell
- B.
  
  A plasma cell
- C.
  
  A reticular cell
- D.
  
  A helper T cell
- E.
  
  A mast cell
5.

The cytolytic action of the complement system is most similar to the action of
- A.
  
  Interleukin-1
- B.
  
  Platelet-derived growth factor
- C.
  
  Granzymes
- D.
  
  Perforin
- E.
  
  IgE
6.

_______ become antigenic by binding to larger host molecules.
- A.
  
  Epitopes
- B.
  
  Haptens
- C.
  
  Interleukins
- D.
  
  Pyrogens
- E.
  
  Cell-adhesion molecules
7.

Which of the following correctly states the order of events in humoral immunity? Let 1 = antigen display. 2=antibody secretion. 3=secretion of interleukin. 4=clonal selection, and 5=endocytosis of an antigen.
- A.
  
  3-4-1-5-2
- B.
  
  5-3-1-2-4
- C.
  
  3-5-1-4-2
- D.
  
  5-3-1-4-2
- E.
  
  5-1-3-4-2
8.

The cardinal signs of inflammation include all of the following except
- A.
  
  Redness
- B.
  
  Swelling
- C.
  
  Heat
- D.
  
  Fever
- E.
  
  Pain
9.

A helper T cell can bind only to another cell that has
- A.
  
  MHC-II proteins
- B.
  
  An epitope
- C.
  
  An antigen-binding site
- D.
  
  A complement-binding site
- E.
  
  A CD4 protein
10.

Which of the following results from a lack of self-tolereance?
- A.
  
  SCID
- B.
  
  AIDS
- C.
  
  Systemic lupus erythematosus
- D.
  
  Anaphylaxis
- E.
  
  Asthma
11.

Some bacteria employ lysozyme to liquefy the tissue gel and make it easier for them to get around
- A.
  
  True
- B.
  
  False
12.

T lymphocytes undergo clonal deletion and anergy in the Thymus
- A.
  
  True
- B.
  
  False
13.

Interferons help to reduce inflammation
- A.
  
  True
- B.
  
  False
14.

T lymphocytes are involved only in cell-mediated immunity
- A.
  
  True
- B.
  
  False
15.

The white pulp of the spleen gets its color mainly from lymphocytes and macrophages.
- A.
  
  True
- B.
  
  False
16.

Perforins are employed in both nonspecific resistance and cellular immunity.
- A.
  
  True
- B.
  
  False
17.

Histamine and heparin are secreted by basophils and mast cells
- A.
  
  True
- B.
  
  False
18.

A person who is HIV-positive and has a TH (CD4) count of 1,000 cells/mL does not have AIDS.
- A.
  
  True
- B.
  
  False
19.

Anergy is often a cause of autoimmune diseases.
- A.
  
  True
- B.
  
  False
20.

Interferons kill pathogenic bacteria by making holes in their cell walls.
- A.
  
  True
- B.
  
  False
21.

Micturition occurs when the _______ contracts.
- A.
  
  Detrusor muscle
- B.
  
  Internal urethral sphincter
- C.
  
  External urethral sphincter
- D.
  
  Muscularis of the ureter
- E.
  
  All of the above
22.

The compact ball of capillaries in a nephron is called
- A.
  
  The nephron loop
- B.
  
  The peritubular plexus
- C.
  
  The renal corpuscle
- D.
  
  The glomerulus
- E.
  
  The vasa recta
23.

Which of these is the most abudant nitrogenous waste in the blood?
- A.
  
  Uric acid
- B.
  
  Urea
- C.
  
  Ammonia
- D.
  
  Creatinine
- E.
  
  Albumin
24.

Which of these lies closest to the renal cortex?
- A.
  
  The parietal peritoneum
- B.
  
  The renal fascia
- C.
  
  The fibrous capsule
- D.
  
  The perirenal fat capsule
- E.
  
  The renal pelvis
25.

Most sodium is reabsorbed from the glomerular filtrate by
- A.
  
  The vasa recta
- B.
  
  The proximal convoluted tubule
- C.
  
  The distal convoluted tubule
- D.
  
  The nephron loop
- E.
  
  The collecting duct