Biological Transport System
Considering the cardiac cycle, the sound “lub” is produced when the
atria contracts
atria relax
ventricles relax
ventricles contract
ventricles contract
Related posts
The blood group systems are discovered by scientistA. Thomas Cooley
B. Karl Landsteiner
C. Camillo Golgi
D. Ernst Haeckel
The Rh-negative blood group of a person is based on
A. presence of neutrophils
B. absence of Rh factors
C. presence of Rh factors
D. presence of tubulin
The dengue fever leads to the decrease in
A. sucrose
B. white blood cells
C. platelets
D. red blood cells
The higher temperatures cause the
A. absorption of chloroplasts
B. making of chlorophyll
C. opening of stomata
D. closure of stomata
The leukemia is caused by cancerous mutation in
A. bone marrow
B. arteries
C. atrium
D. esophagus
The cycle which is made up of alternating contractions and relaxations of the heart is called
A. systemic cycle
B. cardiac cycle
C. aortic cycle
D. pulmonary cycle
Considering all the veins of the human body, the veins that carry deoxygenated blood are
A. pulmonary veins
B. connective veins
C. endothelial veins
D. exothelial veins
Leave a Reply