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Mitral Vlave in mammalian heart guards the opening between

a pulmonary vein snd left auricle

b right atrium and right ventricle

c left atrium and left ventricle

d left ventricle and dorsal aorta


Good day, please select all the correct options in this question: Thanks so much.


In carbohydrate biochemistry,

 A. lactose is a monosaccharide. 

B. sucrose is a disaccharide. 

C. starch contains α1-4 glycosidic links.

 D. glycogen contains α1-4 glycosidic links.

 E. cellulose contains α1-4 glycosidic links.

  • Skin tone depends on 3 factors:
  • _______________ of melanin → Pheomelanin is ____________________ (lighter) while eumelanin is ______________ or _____________ (darker)
  • _______________ of melanin produced by melanocytes → more ______________ = darker

__________ of melanosomes present → more _______________ to hold more melanin


An adult male is being discharged from the hospital following a myocardial infarction. The nurse knows that he understands the guidelines for resuming sexual activity if he states that


A. Bedtime is the best time to have intercourse

B. He should exercise for 10-15 minutes before intercourse to "warm up"

C. He should take nitroglycerin before intercourse to prevent chest pain

D.It is best to avoid having intercourse when the stomach is empty


An elderly patient with emphysema is brought by ambulance to the emergency department. The paramedic states that the patient called them and stated that he did not have any oxygen. The patient is now unconscious. The nurse notes that the oxygen is running at 15L via nasal cannula. The nurse should immediately:


Discuss the relationship between diet,blood pressure,blood cholesterol and circulatory disease.

analyse the relationship between smoking and coronary heart Disease, smoking and lung cancer

Evaluate the effects of smoking on body system


Good day, please select all correct options for the question below: Thanks


During the adaptive immune response

 A. antigens are recognized by T-helper cells. 

B. memory cells produce the secondary immune response. 

C. T-helper cells release interleukins.

 D. the alternative complement pathway is activated.

 E. T-helper cells produce antibodies.

good day, please select all correct options:


Interferon-gamma (IFN-γ)

 A. activates macrophages. 

B. is secreted by natural killer (NK) cells. 

C. lyse virus-infected cells.

 D. is secreted by B-cells.

 E. is an opsonin.

Good day, please select all correct options. Thanks

Macrophages

 A. carry class II major histocompatibility complex (MHC) antigens on their plasma membrane. B. secrete tumour necrosis factor (TNF).

 C. are activated by interferon-gamma (IFN-γ). 

D. are antigen presenting cells. 

E. secrete IgG.

good day, please select all correct options:


Interferon-gamma (IFN-γ)

 A. activates macrophages. 

B. is secreted by natural killer (NK) cells. 

C. lyse virus-infected cells.

 D. is secreted by B-cells.

 E. is an opsonin.

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