How well do you know your organs? Quiz

Answer: Buccal cavity

The oral cavity, or the buccal cavity is the beginning of the digestive system. It has openings inside which lead to three types of salivary glands (parotid, sub-maxillary, and sub-lingual) which produce salivary amylase or ptyalin. The thoracic and abdominal cavities are those of the chest and the abdomen respectively, while the lumen is an empty space of a tubular structure within the body.

Answer: Colon

The colon or the large intestine is the continuation of the small intestine of the digestive system. The appendix and rectum are actually terminal parts of the large intestine and the oesophagus (American English- Esophagus)is the food-pipe.

Answer: True

Such nerves are called 'cranial nerves'. There are twelve pairs of cranial nerves. Similarly, nerves arising from the spinal cord are 'spinal nerves', which are 31 pairs in number.

Answer: Stapes

The stapes or the 'stirrup' is present as one of three bones in the ear. The other two are malleus and incus. They form a bony labyrinth within the ear and can help to conduct sound signals. The ulna is actually one of the two bones present in the arm, the other being the radius.

Answer: False

The pituitary gland is connected to the underside of the brain by a stalk. The correct answer is the adrenal gland. The adrenal glands are cap-like structures present on top of each kidney. Each gland has a cortex and medulla. The adrenal cortex secretes cortisol and aldosterone. The adrenal medulla secretes adrenaline, the 'fight or flight hormone'. Well, that explains your stress!

Answer: Gyri

Gyri are the numerous ridges or elevations present on the brain surface, sulci are the grooves. They help to increase the surface area of the brain and thereby help to accommodate more neurons(functional units of the brain). The hypothalamus is a structure present on the lower side of the brain. The parts present below the brain are collectively termed 'diencephalon'.

Answer: Diaphragm

The diaphragm, which is located below the lungs, plays a major role in respiratory movements in humans. The pancreas is below the stomach and is an endocrine gland, the bronchus is one of the two main branches of the trachea, while the rib cage surrounds the lungs and the heart.

Answer: Auditory nerve

The auditory nerve arises from the inner ear and ends at the brain. The optic and olfactory nerves send visual and chemical information from the eye and the nose respectively. The vagus nerve plays a role in the control of heartbeat and secretions of pancreas.

Answer: True

Hepatocytes are cube-like cells and occupy 4/5 of the total volume of the liver. They help to convert glucose into glycogen, produce bile, synthesize proteins, etc.

Answer: Brain

Of course.... the brain! The center for all the thinking, intelligence and coordination.