Cells and Tissues

Cilia and flagella are extensions of protoplasm.

The type of cartilage found in external ear is elastic cartilage.

Pseudostratified epithelium is a characteristic feature of the mucous membrane of trachea.

Histamine and heparin are two compounds produced by mast cells.

The spongy connective tissue that is found in mesenteries, omenta of alimentary canal and subcutaneous tissue is called areolar tissue.

The epithelial tissue, which forms protective layer of the skin, buccal cavity and tongue is stratified epithelium.

The excretory passages of the urinary system has epithelial cells, which are elastic. These constitute the epithelial tissue called transition epithelium.

The goblet cells of the intestinal epithelium are examples of unicellular glands.

Intramembranous ossification produces bones, which are called membrane bones.

Sterocelia is found in epididymis.

The interneuronal junction are called synapses. A synapse is a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.

The spider-shaped bone cells are called osteoblasts.

One of the examples of gut-associated lymphatic tissues is tonsils.

The process of formation of blood corpuscles is known as haemopoiesis.

The goblet cells in the intestine is present in mucosa.

Neurons are characterised by presence of dendrites, as the dendrites are present only in neurons.

The cytoplasm of the myofibril is known as sarcoplasm.

The substance which is found in most cells and is involved in allergic and inflammatory reaction is histamine. Histamine is amine formed from histidine that stimulates gastric secretions and dilates blood vessels; released by the human immune system during allergic reactions.

The pyramids in mammalian kidney are found in medulla.

Dendrites are a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.

The membrane covering the cartilage is known as perichondium.

The epithelial lining of ovary and seminiferous tubules of the testis is glandular.

The name endometrium is given to the cellular lining of uterus.

Neuromuscular junction is the junction between a nerve fibre and the muscle it supplies.

The connective tissue cells that synthesise antibodies are known as plasma cells.