Biology 7

മൂക്ക്, നാക്ക്, ത്വക്ക്, തലച്ചോർ എന്നീ പ്രധാനഭാഗങ്ങളിൽ നിന്നുള്ള ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ

• Study of nose

                Rhinology

• Loss of smell is called

                Anosmia

• Branch of medicine that deals with condition of ear, nose and throat

                Otolaryngology

• Small projection on the surface for tongue

                Papillae

• Nerve related to the movement of tongue

                Hypoglossal nerve

• Taste buds at the tip of tongue are sensitive to

                Salt and Sweet

• Taste buds at the sides of tongue are sensitive to

                Sour

• Taste buds at the back of tongue are sensitive to

                Bitter

• Largest sense organ

                Skin

• Function of skin

                Excretion and regulation of temperature

• Pigment that gives color to the skin

                Melanin

• Pigment that protects skin from UV rays

                Melanin

• Glands that secrete oily substances called sebum on the skin

                Sebaceous glands

• Outer layer of the skin

                Epidermis

• Thick inner layer of the skin

                Dermis

• Time taken for skin to regenerate

                27-30 Days

• Deficiency of melanin causes

                Albinism

• Diseases affected to the skin

                Eczema, Melanoma, Psoriasis, Albinism

• Melanin present in which layer

                Epidermis

• Total number of nerves in human body

                43 pairs (12 pair of cranial and 31 pair pair spinal)

• Primary command center for the body

                Central nervous system (CNS)

• CNS consist of

                Brain and spinal cord

• Reflex actions are controlled by

                Spinal cord

• Spinal cord has a length of

                45 cm

• The center of co-ordination

                Brain

• Average weight of human brain

                1400 gms

• Protective membrane which envelops the brain and spinal cord

                Meninges

• Part of skull that encloses the brain

                Cranium

• No of bones present in Cranium

                8

• Soft tissue that envelop Cranium

                Scalp

• Largest part of human brain

                Cerebrum

• Part of brain which controls voluntary actions

                Cerebrum

• Part of brain whcih acts as the centre of intelligence, thoughts, emotions, will power, memory, consciousness, imagination, experience, recognition, reasoning, weeping, laughing etc

                Cerebrum

• Outer layer of cerebrum

                Cerebral cortex

• Part of brain which is known as little brain

                Cerebellum

• Center for co-ordination of muscular movements

                Cerebellum

• Primary center for balancing, equilibrium and orientation of body

                Cerebellum

• Alcohol affecting which part of brain

                Cerebellum

• Pain killers affecting which part of brain

                Thalamus

• Relay center of brain

                Thalamus

• Part of brain which controls involuntary actions

                Medula Oblongata

• Part of brain which acts as center for working of heart, contraction of blood vessels, respiratory actions, sneezing, coughing and vomiting

                Medula Oblongata

• Part of brain nearest to the spinal cord

                Medula Oblongata

• Part of brain which acts as center for hunger, thirst, sweating, sleep, temperature, love and hate

                Hypothalamus

• Thermo regulatory center of human body

                Hypothalamus

• Part of brain which controls secretion of pituitary hormons

                Hypothalamus

• Only one neurocrine gland in human body

                Hypothalamus

• Hormons produced by hypothalamus

                Oxytocin and vasopressin

• Hormon which is called as ADH (Anti Diuretic Hormone)

                Vasopressin

• Hormon which controlling the water balance of the body

                ADH

• Hormon which helps the contraction of uterus during parturition

                Oxytocin

• Condition caused by the excessive thirst and excretion of excess urine due to the insufficient vasopressin in the body is called

                Diabetes insipidus
                                                                               (To be Continued...)