The products of respiration are
nitrogen and water
nitrogen and carbon dioxide
water and oxygen
carbon dioxide and water
Correct answer is D
No explanation has been provided for this answer.
The hepatic portal vein is often heavily loaded with food-nutrients because it carries blood
directly from the heart
from the liver to the heart
from the small intestine to the liver
from the liver to join the posterior vena cava
Correct answer is C
No explanation has been provided for this answer.
Excessive bleeding from an injury may be due to lack of vitamin
A
B
C
K
Correct answer is D
No explanation has been provided for this answer.
are internally located
are tubular
have rigid thick walls
constantly absorb water
Correct answer is C
No explanation has been provided for this answer.
The axial skeleton is made up of the following
skull, vertebral column, rib cage and sternum
limbs and limb girdles
lumbar and thoracic vertebrae
vertebral column and lumbar vertebrae
Correct answer is A
No explanation has been provided for this answer.