What are endocrine glands? Give example.

What are endocrine glands? Give example.
by

1 Answer

Answer :

The glands that discharge their secretions directly into blood stream are called endocrine glands. Example: Pituitary gland, Thyroid gland
by

Related questions

Name the major endocrine glands.

Description : Name the major endocrine glands.

Last Answer : a) Pituitary gland b) Thyroid gland c) Parathyroid gland d) Adrenal gland e) Islets of Langerhans f) Gonads

What are exocrine glands? Give example.

Description : What are exocrine glands? Give example.

Last Answer : The glands that discharge their secretions through the ducts to their target organs are called exocrine glands. Ex: Salivary gland, pancreas.

Why is pituitary gland called ‘The conductor of endocrine orchestra’?

Description : Why is pituitary gland called ‘The conductor of endocrine orchestra’?

Last Answer : Pituitary gland secretes many hormones which control the functioning of other endocrine glands like thyroid gland, adrenal gland, gonads etc. Hence pituitary gland is called the conductor of endocrine orchestra.

What are lacrymal glands or tear glands?

Description : What are lacrymal glands or tear glands?

Last Answer : Lacrymal glands are the glands present in the outer region of the upper eye lid. It produces secretions that keeps the surface of the eyes moist and wash out dust when we blink.

Where are the adrenal glands located? Mention the parts of the adrenal gland.

Description : Where are the adrenal glands located? Mention the parts of the adrenal gland.

Last Answer : The adrenal glands are located on the upper part of each kidney. Each adrenal gland has two parts an outer cortex and inner medulla.

Where are parathyroid glands located? Mention the hormone secreted. Mention the disorder caused due to its under secretion and over secretion. State its function.

Description : Where are parathyroid glands located? Mention the hormone secreted. Mention the disorder caused due to its under secretion and over secretion. State its function.

Last Answer : Parathyroid glands are embedded in the tissues of thyroid gland. Parathyroid gland secreted a hormone called parathormone. The function of parathormone is to control the amount of calcium salts in ... cramps. Over secretion of parathormone removes calcium from the bones making them soft and spongy.

What is a gland? Which are the two types of glands in our body?

Description : What is a gland? Which are the two types of glands in our body?

Last Answer : A gland is an organ made up of cells which are specialised for secretion of particular chemical substances. The two types of glands are glands with ducts (exocrine glands) and glands without ducts (endocrine glands).

Give an example to show that sympathetic and para-sympathetic system work opposite in function.

Description : Give an example to show that sympathetic and para-sympathetic system work opposite in function.

Last Answer : Sympathetic system stimulates the pupil in the eye to dilate (open) where as parasympathetic system stimulates it to constrict (close).

Mention the types of growth regulators and give example.

Description : Mention the types of growth regulators and give example.

Last Answer : a) Plant growth promoters ex: Auxins, Gibberellins, cytokinins b) Plant growth inhibitors ex: Abscisic acid, Ethylene

What are phytohormones? Give example.

Description : What are phytohormones? Give example.

Last Answer : Plant hormones are also called phytohormones. They are organic compounds which are produced by tissues that regulate plant growth and development.

Give an example of irritability.science Control-&-Co-ordination-in-Plants-&-Animals

Description : Give an example of irritability.

Last Answer : If an earthworm is touched, it moves away from the place. Plants grow towards the light.

Give reason: a) A strong blow on the ears is very dangerous.b) When there is severe throat infection we normally get ear pain.

Description : Give reason: a) A strong blow on the ears is very dangerous.b) When there is severe throat infection we normally get ear pain.

Last Answer : a) A strong blow on the ears is very dangerous.As it would damage the semicircular canals and cochlea. This would lead to leakage of of fluids and sometimes even death, with ear ... pain. Throat infections affect the middle ear because eustachian tubes connect the middle ears and the throat.

Give reason: A convex lens is used to correct hypermetropia.

Description : Give reason: A convex lens is used to correct hypermetropia.

Last Answer : In a hypermetropic eye, light is focused behind the retina. A convex lens will force it to form on the retina. Hence a convex lens is used to correct hypermetropia.

Give reason: A concave lens is used to correct myopia.

Description : Give reason: A concave lens is used to correct myopia.

Last Answer : In a myopic eye light falls too short from the retina. A concave lens forces light to fall on the retina. Hence concave lens is used to correct myopia.

Give reason: a) When we suddenly enter a cinema hall, we will not be able to see any objects.b) There is no image formation at blind spot.

Description : Give reason: a) When we suddenly enter a cinema hall, we will not be able to see any objects.b) There is no image formation at blind spot.

Last Answer : a) When we suddenly enter a cinema hall, we will not be able to see any objects. Our eyes take some time to adjust to the light in the surroundings. When we are in bright area pupil constricts. ... region where the optic nerve exits the eye ball. There are no sensory cells. Hence no image is formed.

Give reason: Choroid is thick and rich with blood vessels

Description : Give reason: Choroid is thick and rich with blood vessels

Last Answer : Choroid has a layer of blood vessels which nourishes the back of the eye.

Give reason: A drunkard walks unsteadily.

Description : Give reason: A drunkard walks unsteadily.

Last Answer : The alcohol affects the cerebellum which is responsible for maintaining balance of the body. It is not able to control and coordinate the movement of muscles while walking.

“An injury to the left cerebral hemisphere may result in paralysis of organs on the right side”. Give reason.

Description : “An injury to the left cerebral hemisphere may result in paralysis of organs on the right side”. Give reason.

Last Answer : The nerves coming from the right side of the body are connected to the left cerebral hemisphere.

Give reason: Person suffering from diabetes incipidus pass large quantity of dilute urine.

Description : Give reason: Person suffering from diabetes incipidus pass large quantity of dilute urine.

Last Answer : Since reabsorption of water in the kidneys has decreased

Give reason: Phytohormones are also called growth regulators.

Description : Give reason: Phytohormones are also called growth regulators.

Last Answer : Phytohormones are organic compounds which regulate plant growth and development in plants. Hence they are called growth regulators also.

Give examples show that not all responses in plants are slow.

Description : Give examples show that not all responses in plants are slow.

Last Answer : Insectivorous plants like Venus fly trap responds very quickly to touch. The leaflets of touch me not plant (Mimosa Pudica) get folded immediately on touching.

Give reason: Response in plants cannot be observed immediately

Description : Give reason: Response in plants cannot be observed immediately

Last Answer : Response in plants is very slow. Hence it cannot be observed immediately.

What structures enable the skin to function as a sense organ?

Description : What structures enable the skin to function as a sense organ?

Last Answer : Sensory receptors are distributed all over the skin which perceive the stimuli. Touch receptors are located near the surface of the skin. Pressure receptors and pain receptors are located deep inside the skin.

After relay race, Runner-A pours glucose powder into his mouth. Runner-B tastes the glucose slowly with the tip of his tongue. Whom do you think, experiences the sweetness most? Why?

Description : After relay race, Runner-A pours glucose powder into his mouth. Runner-B tastes the glucose slowly with the tip of his tongue. Whom do you think, experiences the sweetness most? Why?

Last Answer : Runner-B experiences most sweetness because the taste buds of sweetness are distributed in the front.

Briefly explain the mechanism of taste.

Description : Briefly explain the mechanism of taste.

Last Answer : Food that is eaten mixes with saliva and enters the pores of the taste buds. They chemically stimulate the sensory cells. These cells convert the chemical stimuli into electrical impulses. The electric impulses pass to the brain through the sensory neuron. The brain interprets the impulses as taste.

Explain the structure of tongue.

Description : Explain the structure of tongue.

Last Answer : The tongue is covered by a mucus membrane. It has numerous tiny sensory cells called taste buds. Taste buds are composed of a cluster of cells with receptors lying in a small depression on the surface.

Explain how a pea or a button which has got into the nasal cavity be removed. OR What is the first aid to be provided to a person who got a pea or a button into the nasal cavity accidentally?

Description : Explain how a pea or a button which has got into the nasal cavity be removed. OR What is the first aid to be provided to a person who got a pea or a button into the nasal cavity accidentally?

Last Answer : If a pea or a button gets into the nasal cavity accidentally, give a pinch of snuff to the person. It causes violent sneezing and the foreign body will be thrown out. Visit a doctor if the above method does not work.

Why does food appear relatively tasteless when one has cold or running nose?

Description : Why does food appear relatively tasteless when one has cold or running nose?

Last Answer : When you put food in your mouth, odour molecules from that food travel through the enter nose and stimulate the olfactory receptor cells at the top of your nasal cavity, If mucus in your ... receptor cells. Thus, the brain receives no signal identifying the odour Hence food eaten appears tasteless.

Briefly explain the sensation of smell.

Description : Briefly explain the sensation of smell.

Last Answer : The molecules from the substance escapes and are carried by the inhaled air. On reaching the olfactory epithelium, they get dissolved in the mucus and stimulate the receptors. The stimulations are ... olfactory nerve to the brain. Here it interprets the impulses and gives the sensation of smell.

Briefly explain the structure of the human nose.

Description : Briefly explain the structure of the human nose.

Last Answer : The nasal cavity is lined by olfactory epithelium. The upper part of the nasal cavity has receptors of smell. The receptors are connected with the olfactory nerve. The olfactory nerve carries the impulses to the brain.

What are the cares to be taken of the ear?

Description : What are the cares to be taken of the ear?

Last Answer : a) Hardened wax from the auditory canal should not be removed using sharp objects as they damage the eardrum. b) Loud noise must be avoided as they damage the eardrum. c) Visit a doctor if ... hearing. e) Small insects entering the ear can be removed by filling the external ear with salt water.

What are these? State their function a) Pinna

Description : What are these? State their function a) Pinna

Last Answer : a) Pinna: It is a cartilagenous organ covered with skin. It collects sound waves and directs them into the auditory canal. b) Tympanum: It is an obliquely placed membrane at the end of ... called Cochlea. It also contains a delicate structure called organ of corti which forms the auditory nerve.

How is the ear protected?

Description : How is the ear protected?

Last Answer : a) The auditory canal has hairs at its opening to prevent tiny particles from entering the ear. b) The wax secreting cells on the inner lining of the auditory canal produces wax that traps small organisms and dust.

a) What is organ of corti? b) Name the liquids that are present in inner ear.

Description : a) What is organ of corti? b) Name the liquids that are present in inner ear.

Last Answer : a) Cochlea has delicate structures called organ of corti, which have receptors that join to form the auditory nerve. b) The entire ear is filled with a fluid called endolymph. The inner ear is surrounded by a fluid called perilymph.

Describe the structure of the human ear.

Description : Describe the structure of the human ear.

Last Answer : a) The human ear is divided into three parts namely the outer ear, the middle ear and the inner ear. b) The outer ear consists of pinna, auditory canal and the tympanum. c) Pinna is ... Cochlea has delicate structures called organ of corti, which have receptors that join to form the auditory nerve.

What are the precautions to be taken regarding the care of the eyes?

Description : What are the precautions to be taken regarding the care of the eyes?

Last Answer : a) Do not strain your eyes by reading in dim light b) Avoid reading books during journey on roads. c) Avoid very bright light. d) Avoid watching television from a short distance. e) Avoid working on ... with cold clean water atleast twice a day. g) Consult an eye specialist in case of any problem.

A person is not able to identify the colours in the traffic signal. What disease is he suffering from?

Description : A person is not able to identify the colours in the traffic signal. What disease is he suffering from?

Last Answer : The disease is called colour blindness. It is a genetic disorder in which a person is unable to differentiate colours.

What is Glaucoma?

Description : What is Glaucoma?

Last Answer : Glaucoma is a disorder of the eye. The eyeball of a person suffering from glaucoma gradually hardens. The person sees flashes of light and coloured rings around the objects. The vision gradually decreases and leads to blindness. It occurs in persons above forty years of age.

What is astigmatism? How can it be corrected?

Description : What is astigmatism? How can it be corrected?

Last Answer : Astigmatism is a defect in which, a person looking at horizontal or vertical lines appears distorted. It is caused due to the unevenness of the crystalline lens. It can be corrected by using cylindrical lenses.

A person is advised vitrectomy surgery. Which gland which is not functioning properly?

Description : A person is advised vitrectomy surgery. Which gland which is not functioning properly?

Last Answer : Islets of Langerhans.

What is vitrectomy?

Description : What is vitrectomy?

Last Answer : Vitrectomy is a major surgical procedure to treat diabetic retinopathy. In this procedure the blood that has leaked into the vitreous humour is removed and vision is restored.

What is diabetic retinopathy? How can it be prevented?

Description : What is diabetic retinopathy? How can it be prevented?

Last Answer : Diabetic retinopathy is a disorder of the eye that occurs in people suffering from diabetes. After many years of diabetes, the blood vessels of the retina may leak, close-up or begin to grow. ... enter the vitreous humour making it opaque. It can be prevented by early treatment with laser beam.

What is cataract?

Description : What is cataract?

Last Answer : Cataract is a disorder of the eye in which the lens of the eye becomes cloudy, causing partial or total blindness.

What is Presbyopia?

Description : What is Presbyopia?

Last Answer : Presbyopia is a defect in which a person can see neither near-by nor far off objects clearly. It occurs at old age due to the loss of elasticity of eye lens.

What is hyper-metropia? How can it be corrected?

Description : What is hyper-metropia? How can it be corrected?

Last Answer : Hyper-metropia is a defect in which a person can see far off objects clearly but cannot see the near-by objects clearly. It is caused due to the flattening of eye ball. It can be corrected by using convex lens.

What is myopia? How can it be corrected?

Description : What is myopia? How can it be corrected?

Last Answer : Myopia is a defect of the eye in which the person can see near by objects but cannot see far off objects clearly. It is caused due to the bulging of the eye ball or elongation of the eye ball. It can be corrected by using concave lens.

Mention the common defects of the eye.

Description : Mention the common defects of the eye.

Last Answer : a) Myopic or short sight b) Hyper-metropia or long sight c) Presbyopia d) Nyctolopia or night blindness e) Cataract

What is meant by accommodation of the eye?

Description : What is meant by accommodation of the eye?

Last Answer : The ability of the eye lens to see both near by and far away objects clearly is called accommodation of the eye.

How is the human eye able to adjust to near and far objects?

Description : How is the human eye able to adjust to near and far objects?

Last Answer : The human eye is able to adjust to near and far objects by altering the focal length of the lens. When we see a near by object, the muscles around the lens contract which increase the convexity ... we see a distant object, the muscles around the lens relax which decreases the convexity of the lens.

Explain the functioning of the eye.

Description : Explain the functioning of the eye.

Last Answer : a) The light ray reflected from the object are focussed on the retina to from the image on the retina b) The receptor cells in the region are stimulated by photochemical reactions. c) The ... visual centre in the cerebrum. d) The impulses are interpreted in the cerebrum, resulting in vision.