1.Why are lymph node entrances smaller in diameter than the exits? a. This allow

Question

1.Why are lymph node entrances smaller in diameter than the exits?

a. This allows for more T cells to work. b.This allows for more B cells to work. c. This allows for lymph to move quickly through the node itself. d. This allows for lymph to move slowly through the node itself. e. This allows for even distribution of endocrine hormones.

2. Which of the following is the most important factor in Streptococcus pneumoniae virulence?

a.The presence of a particular Lancefield antigen b. The production of pneumolysin c. The presence of a polysaccharide capsule d. The ability to lyse red blood cells e.  Strain-specific teichoic acids in its cell wall

3. The deer tick is the vector for _____ which invades the _____ system of humans

a. Chagas’ disease; circulatory b. African sleeping sickness; nervous c. Western sleeping sickness; circulatory d. toxoplasmosis; lymph e. babesiosis; circulatory

4. Why are Ascaris lumbricoides infections so prevalent in tropical and subtropical regions?

a. Its hooks latch on and will not let go. b. Its eggs hatch out in bloodstream. c. Its cuticle is soft. d. Its eggs remain viable in the moist, warm soil for years e. Mosquitoes are common there.

5. Which of the following is the only ssDNA virus that can cause disease in humans?

a. Adenoviruses b. Human herpesvirus 1 c. Varicella d. Human herpesirus 4 e. Parvovirus

Explanation / Answer

1.lymph node entrances smaller in diameter than the exits because this allows for lymph to move slowly through the node itself.

so answer is

d. This allows for lymph to move slowly through the node itself.

2.the most important factor in Streptococcus pneumoniae virulence is The presence of a polysaccharide capsule

so answer is

c.The presence of a polysaccharide capsule

3.The deer tick is the vector for _____ which invades the _____ system of humans

d. toxoplasmosis; lymph

4. Ascaris are lumbricoides infections so prevalent in tropical and subtropical regions because  Its eggs hatch out in bloodstream

so answer is

b. Its eggs hatch out in bloodstream

5.Which of the following is the only ssDNA virus that can cause disease in humans?

e. Parvovirus

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.