The type of epithelial cells which line the inner surface of Fallopian tubes, bronchioles and bronchi are known as
squamous epithelium
ciliated epithelium
columnar epithelium
cubical epithelium
B.
ciliated epithelium
The cells of ciliated epithelium consists of numerous delicate hair like outgrowths, called cilia. It lines most of the respiratory tract and Fallopian tubes. It is also present in the tympanic cavity of middle ear and auditory tube.
Squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries. It is found in the walls of blood vessels and air sacs of lungs.
Columnar epithelium is composed of a single layer of tall and slender cells. It is found in the lining of stomach and intestine.
Cuboidal epithelium is composed of a single layer of cube- like cells. It is found in the ducts of glands and tubular parts of nephrons in kidney.
Chemosensitive area of respiratory centre in medulla is affected by
less CO2 and H+ ions
less O2 and H+ ions
excess CO2 and H+ ions
excess O2 and H+ ions
Which of the following have porous body and are diploblastic?
Aurelia and Obelia
Adamsia and Euplectella
Leucosolenia and Spongilla
Sycon and Hydra
Which one is correct regarding electrocardiograph (ECG)?
P- wave represents the electrical excitation of the ventricle.
QRS complex represents repolarisation of the ventricles
T- wave represents repolarisation of the atria
By counting the number of QRS complexes one can determine the pulse rate
Microvilli of intestinal epithelium are similar in function with
typhlosole in earthworm
hepatic caecae in cockroach
intestinal caecum in earthworm
Malpighian tubules in coackroach
What is the effect of GnRH produced by hypothalamus?
Stimulates the synthesis and secretion of androgens
Stimulates secretion of milk in mammary glands
Stimulates foetal ejection reflex
Stimulates synthesis of carbohydrates from non- carbohydrates in liver
What are Singer and Nicolson known for?
One-gene-one-enzyme hypothesis
Plasma membrane modifications
Fluid-mosaic model of plasma membrane
Structure of DNA
