Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
2.1k views
in Psychology by (65.7k points)

In an adult subject standing quietly at rest, venous pressure in the 

A. Foot is approximately equal to arterial pressure at heart level. 

B. Thorax decreases when the subject inhales. 

C. Hand is subatmospheric when the hand is raised above the head. 

D. Venous sinuses of the skull are subatmospheric. 

E. Superior vena cava is an index of cardiac filling pressure.

1 Answer

+1 vote
by (71.1k points)
selected by
 
Best answer

A. True It is about 90 mmHg, due to the column of blood (about 1 metre) between the heart and the foot. 

B. True The negative intrathoracic pressure during inhalation is transmitted to the veins. 

C. False Limb veins collapse above heart level. Negative pressure cannot be transmitted along a collapsed tube so venous pressure is atmospheric in the raised hand. 

D. True The sinuses are held open by their meningeal attachments and cannot collapse. 

E. True A central venous pressure line is usually placed here.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...