The organ situated in the pericardial cavity of a mammal is the
heart
liver
stomach
spleen
Correct answer is A
No explanation has been provided for this answer.
One basic similarity between the nervous and endocrine systems is that they both
produce widespread effects
transmit very fast impulses
involve the use of chemical substances
produce precise and short-lived effect
Correct answer is C
No explanation has been provided for this answer.
An increase in air pressure in the lungs is due to the
increase in the volume of the thoracic cavity
upward movement of the ribs
relaxation of the diaphragm
contraction of the intercostal muscles
Correct answer is C
No explanation has been provided for this answer.
The product of excretion common to the mammalian kidney, lung, and skin is
mineral salt
carbon (IV) oxide
water
urea
Correct answer is C
No explanation has been provided for this answer.
Night-blindness results from a deficiency of
vitamin E
Vitamin A
Vitamin K
Vitamin C
Correct answer is B
No explanation has been provided for this answer.