Blood-borne cancerous cells have recently spread from a woman's ...

[Pea0909berry]

Blood-borne cancerous cells have recently spread from a woman's primary tumor in her pancreas to her bones.
 
  Which of the following components of the woman's immune system are likely to be directly involved in the attempt to eradicate the potential metastasis? Select all that apply.
  A)
  T lymphocytes
  B)
  Macrophages
  C)
  Natural killer (NK) cells
  D)
  B cells
  E)
  Mast cells

Question 2

While discussing embryogenesis to a group of students moving through the maternity ward, the nurse quizzes them to see if they know what is happening during sonic hedgehog signaling. Which of the following answers would be considered accurate?
 
  Select all that apply.
  A)
  Development of the eyes
  B)
  Separation of the brain into two cerebral hemispheres
  C)
  A carrier system for delivering the appropriate amino acids to the ribosomes
  D)
  Development of the correct number of fingers and toes
  E)
  Bone formation leading to macrocephaly

[Sarahjh]

Answer to Question 1

Ans:
A, B, C, D

Feedback:

Virtually all of the components of the immune system have the potential for eradicating cancer cells, including T lymphocytes, B lymphocytes, antibodies, macrophages, and natural killer (NK) cells. Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing and defense against pathogens.

Answer to Question 2

Ans:
B, D

Feedback:

Sonic hedgehog signaling is involved in many key developmental events at multiple times during embryogenesis. It participates in such diverse developmental steps as establishment of the left-to-right axis responsible for the rostral-caudal orientation of the nervous system, the separation of the brain into two cerebral hemispheres, right and left eye orientation, and the separation and development of the correct number of fingers and toes. The PAX family of transcription factors is responsible for the development of the eye. Transfer RNA acts as a carrier system for delivering the appropriate amino acids to the ribosomes. Bone formation leading to macrocephaly is caused by fibroblast growth factors.

[Pea0909berry]

TYSM

[kjohnson]

Excellent