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TLS Online TPP Program

#Question id: 1809

Which of the following statements is TRUE of αβ T-cells?

#Unit 4. Cell Communication and Cell Signaling

  1. αβ T-cells initially express a pre-TCR bearing an invariant pre-β chain

  2. αβ T-cells express RAG-1 and RAG-2 at the pre-T stage

  3. αβ T-cells can be CD4+CD8− but not CD4−CD8+

  4. Unlike γδ T-cells, αβ T-cells do not rely on Notch-1 signaling pathways during their development

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TLS Online TPP Program

#Question id: 30053

#Unit 7. System Physiology – Animal

The second heart sound is produced by:
TLS Online TPP Program

#Question id: 30054

#Unit 7. System Physiology – Animal

The fourth heart sound is produced by:
TLS Online TPP Program

#Question id: 30055

#Unit 7. System Physiology – Animal

The lowest arterial pressure in the arteries during ventricular relaxation:
TLS Online TPP Program

#Question id: 30056

#Unit 7. System Physiology – Animal

The highest arterial pressure in the arteries after blood has been ejected from the left ventricle during systole, known as:
TLS Online TPP Program

#Question id: 30057

#Unit 7. System Physiology – Animal

The difference between systolic pressure and diastolic pressure known as:
TLS Online TPP Program

#Question id: 30058

#Unit 7. System Physiology – Animal

The dicrotic notch on the aortic pressure curve is caused by: