The serous membrane which covers the lungs is called
pericardium
peritoneum
perichondrium
pleura
The volume of air that can be breathed in by maximum forced inspiration over and above the normal inspiration is called
expiratory reserved volume
inspiratory reserved volume
vital capacity
inspiratory capacity
How many ATP are produced when one molecule of FADH2 is oxidised to FAD through electron transport system?
2
3
1
4
Which valve is present at the opening of coronary sinus?
Mitral valve
Eustachian valve
Thebesian valve
Tricaspid valve
C.
Thebesian valve
The coronary sinus is a collection of veins joined together to form a large vessel that collects blood from the heart muscle. It delivers deoxygenated blood to the right atrium, as do the superior and inferior vena cava. It returns the blood from the substance of the heart, and is protected by a semicircular fold of the lining membrane of the right atrium, at the orifice of the coronary sinus known as thebesian valve (i.e., valve of coronary sinus). Its main function is to prevent the regurgitation of blood into the sinus during the contraction of the atrium.
The mitral valve is a valve that lets blood flow from one chamber of the heart, the left atrium, to another called the left ventricle.
The Eustachian valve (also known as the "valve of the inferior vena cava") is a ridge of variable thickness in the inferior right atrium. It is a remnant of a fetal structure that directed incoming oxygenated blood to the foramen ovale and away from the right atrium.
The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, between the right atrium and the right ventricle. Its function is to prevent back flow of blood from the right ventricle into the right atrium.
Which of the following organs does not produce any digestive enzymes?
Salivary gland
Pancreas
Liver
Stomach
The disease that occurs in mature adult human being due to deficiency of calciferol is
keratomalacia
osteomalacia
glossitis
pernicious anaemia
Which blood cells can engulf bacteria by phagocytosis?
Eosinophil and basophil
Basophil and lymphocyte
Neutrophil and monocyte
Neutrophil and lymphocyte
Which excitatory neurotransmitter is involved in the transmission of impulse at the neuromuscular junction?
Epinephrine
Serotonin
Acetylcholine
Glycine
Which area of cerebral cortex is responsible for the interpretation of speech?
Broca's area
Wernicke's area
Premotor area
Association area of sensory cortex
Which of the following pituitary hormones is secreted without the involvement of a Releasing Hormone (RH)?
Thyroid Stimulating Hormone (TSH)
Follicle Stimulating Hormone (FSH)
Oxytocin
Prolactin