Animal Tissue Test - 4

Simple columnar (ciliated) epithelial tissue lines the fallopian tubes.

When calcium binds to troponin, troponin releases tropomyosin, exposing the myosin binding sites.

A contraction in which the muscle does not shorten, but its tension increases is called isometric contraction.

Smooth muscle cells have the greatest ability to regenerate.

Mammary glands are apocrine glands. In mammary glands, the secretory products are stored in the apical part of the gland cells. Later on, this part breaks, releasing the secretion.

The squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries. They are found in the walls of blood vessels.

Connective tissue with the collagen fibres present in rows between many parallel bundles of fibres is found in tendons. These are called dense regular connective tissue.

Frogs undergo a period of aestivation in response to high temperatures and arid conditions. It is a state of dormancy characterised by lowered metabolic rate.

The heart of tadpole stage of frog is two-chambered whereas adult frog has three-chambered heart.

In cockroaches, uric acid is synthesised in malphigian tubules. Uric acid is stored in uricose gland or utriculi majors of the mushroom gland in male cockroach. Nephrocytes and fat bodies also help in excretion and storage of nitrogenous waste.