CSS :: Circulatory System
1.
In all vertebbrates the circulatory system utilizes following transport media:
A.
Blood
B.
Lymph
C.
Both of these
D.
None of these
Answer: Option C
Explanation:
2.
Blood transports:
A.
Oxygen only
B.
Nutrients and nitrogen wastes
C.
Respiratory gases, nutrients and nitrogenous waste
D.
Respiratory gases and nitrogenous wastes
Answer: Option A
Explanation:
3.
One of the peculiar feature of cardiac muscles forming myocardium of heart is that:
A.
They work involuntarily
B.
They are both striped, unstriped and branched
C.
They never undergo fatigue
D.
They have all these properties
Answer: Option D
Explanation:
4.
Heart is made up of:
A.
Epicardium
B.
Myocardium
C.
Endocardium
D.
All of these structures
Answer: Option D
Explanation:
5.
A cavity surrounding the heart is called:
A.
Peritoneal cavity
B.
Pericardial cavity
C.
Perichondrial cavity
D.
Perineural cavity
Answer: Option B
Explanation:
6.
Heart in frog lies within:
A.
Thoracic cavities
B.
Abdominal cavity between two fore limbs
C.
Mediastinal space
D.
None of these
Answer: Option B
Explanation:
7.
In between the thoracic cavities the space containing heart in rabbit is called:
A.
Pleura
B.
Mediastinum
C.
Diaphragm
D.
None of these
Answer: Option B
Explanation:
8.
Heart in frog has certain chambers which are not found in rabbit:
A.
Auricles
B.
Ventricles
C.
Sinus venosus and conus arteriosus
D.
None of these
Answer: Option C
Explanation:
9.
Sinus venosus is formed by union of:
A.
Two precavals
B.
One postcaval
C.
All of these
D.
None of these
Answer: Option C
Explanation:
10.
Opening of pulmonary veins in the left auricle do not carry any valve but there is no back-flow or blood while left auricle contracts because of the fact that:
A.
Valves in pulmonary veins check back flow
B.
Contraction of left auricle automatically closes the opening of pulmonary veins
C.
Inter-auricular septum helps to close the opening
D.
There is some other reason
Answer: Option B
Explanation:
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