17 Which statement is correct for most veins in the human body?C A They carry blood at high pressure. B They have a pulse. C They have valves. D They take blood away from the heart. 相关知识点: 试题来源: 解析 C 反馈 收藏
The butterfly pumps a fluid called hemolymph into the veins of its wings, which causes them to expand and harden, allowing the butterfly to fly. **D. Adult butterflies will lay eggs the moment they can fly.** This statement is not necessarily true. Adult butterflies need to mate and ...
Select the correct answer. Which of the following is true about veins? A) Veins carry blood away from the heart, while arteries carry blood to the heart. B) Veins are more muscular than arteries. C) Veins have valves; arteries do not. D) Veins have a smal ...
Which of these are true? 1. The force blood places on a vessel is called perfusion. 2. Arteries have pulsatile blood flow, while veins do not. 3. The greater the vessel radius at any given time, the greater is its resistance. 4. Blood pressure ...
By compressing the veins and forcing blood forward, these contractions apparently improve the flow of venous blood returning to the heart. 题目: It can be inferred from the passage that which of the following is a true statement about sea snakes? 选项: A、They frequently rely on waves of ...
Which is/are NOT the component of the cardiovascular system?声明: 本网站大部分资源来源于用户创建编辑，上传，机构合作，自有兼职答题团队，如有侵犯了你的权益，请发送邮箱到feedback@deepthink.net.cn 本网站将在三个工作日内移除相关内容,刷刷题对内容所造成的任何后果不承担法律上的任何义务或责任 ...
- Conclusion: This statement is true. 4. Final Evaluation: - Since all three statements are true, the correct answer is that more than one option is correct. Final Answer: More than one option is correct (Option D). --- Show More ...
of patient collection of small quantities from streams and veins (矿脉) , often by slave labor. The essential value of gold has always been known, even before gold was used in coinage. It remains the only universally recognized standard of value in international monetary exchange. Most of the...
Proper results depend on the dosage taken and drinking plenty of water. Dr. Frederick’s Rapid Relief Hemorrhoids As one user put it, “it is just psyllium husk in pill form”, a true statement that doesn’t undermine this product’s effectiveness. Doctors will often recommend upping the ...
Which statement concerning arteries, veins, and capillaries is not true? (a) Valves assist in the flow of blood in veins. (b) Muscular arteries are capable of adjusting the rate of blood flow through increased vasoconstriction and vasodil...