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#cardiovascular

8 public questions tagged with this topic.

ZOOLOGY

Which of the following statements about arteries is correct?

**Arteries have thick muscular walls** to withstand **high blood pressure** exerted by the pumping action of the heart. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Zoology section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Zoology portion (Latest NCERT Textbooks for Academic Session 2026-27 - Rationalized Edition for Class XI and XII), Topic: Structural organization, ph

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ZOOLOGY

Which of the following is incorrect about arteries?

Not all arteries carry oxygenated blood. The **pulmonary artery** carries **deoxygenated blood** from the right ventricle to the lungs. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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ZOOLOGY

Which of the following is correct about the circulatory system?

**Systemic circulation** distributes oxygenated blood from the **left ventricle** to body tissues and returns deoxygenated blood to the right atrium. This follows from NCERT principle where relation explains outcome clearly for students.

Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function, Topic: Structural organization and physiology.

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Gene Therapy

Target cells in cardiovascular gene therapy include:

Endothelial cell central therapeutic target cardiovascular gene therapy because monolayer regulates vascular homeostasis via eNOS converting L-arginine to nitric oxide stimulating soluble guanylate cyclase raising cGMP relaxing smooth muscle, prostacyclin via COX2 inhibiting platelet aggregation, barrier integrity VE-cadherin junctions, leukocyte adhesion E-selectin VCAM1. Dysfunction oxidative stress uncoupling eNOS drives atherosclerosis hypertension ischemia. Ischemic peripheral artery disease refractory angina benefit proangiogenic factors VEGF-A165, FGF4, HGF, HIF1-alpha delivered AAV1 or

Ref: Circ Res Cardiovascular Gene Therapy Endothelial Targets 2022; NHLBI Vascular Gene Therapy Overview; Lodish Vascular Biology Endothelial Function Chap 22.

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