Blood Vessels 2, Venous return

Venous return MCQs. Leave answers in comments section for marking.
1. Which of the following structures contain valves to ensure one-way flow of blood?
a. pulmonary arteries
b. systemic veins
c. systemic arteries
d. venules
2. Choose one true statement;
blood flows from central to peripheral veins
blood flows from proximal to distal leg veins
blood flows from deep to superficial veins
blood flows from superficial to deep veins
3. Deep veins in the leg will drain blood into the;
a. superior vena cava
b. inferior vena cava
c. jugular veins
d. left atrium
4, Which of the following is not a mechanism of venous return?
a. gravity
b. contraction of skeletal muscles
c. negative pressures in the abdomen generated by upward movement of the diaphragm during expiration
d. positive pressures in the abdomen generated by upward movement of the diaphragm during expiration

[@hajahnormadiahghani7654]

You are the cause of many lives being saved.Much blessings to you.

[@lindasun5178]

Thank you so much, Dr Campbell. I've learned how Varicose and DVT appear!

[@engin7787]

Today's One of the most important lesson is for me the volume blood from the venous return determines the cardiac output. It means ,do walk do exercise everyday. Life is movements

[@user-sl1di5yi9q]

I just want to say thank you so much for all the videos. It helps a lot in my Nursing life.

[@dr.panigrahislectures8238]

I should appreciate you sir for your best explanation and great efforts.....

[@shashimoghe3920]

Dr john Campbell sir thanks very much for this very clear explanation on Venus return great great knowledge regards 08/06/2022

[@horracemarsland1384]

Wow !! I've had 2 dvts in my legs started 30 years ago after a accident,suffered with leg ulcers ever since,lifelong warfarin.would love to meet you john.

[@adelmohd1790]

Go on our perfect doctor

[@hassanalsitrawi8609]

you are the best. period

[@jasminemh5664]

Thanks best Doc ☺️

[@desales20]

So there can only be a varicose vein WHEN A VALVE IN A COMMUNICATING (PERFORATING) VEIN HAS FAILED. So to remove varicose veins it suffices to strengthen JUST THE VALVES IN THE COMMUNICATING VEINS. Is there ongoing research into how this could be done?

[@muya575]

Soo helpful 🎉

[@namakausiteketa3242]

Am learning alot.many thanks to you for the awesome work

[@carleykish8942]

1. b
2. blood flows from deep to superficial veins
3. b
4. b

[@walaabdeljawad1439]

thank you so much this was helpful

[@rasilavegad3197]

I love ur teaching sir

[@RahmoAhmedIMSPRNKUGY]

Thanks ❤️

[@ridossoromano9101]

Brilliant sir.

[@doctorkyrgyz]

Thank you sir

[@OceansCindy]

Dr. Campbell, you resemble Irish actor Paul Mescal!

[@yasminmbayo7266]

Thank you sir