respiratory pigment which gives red colour. . It transports oxygen from lungs to tissues and carbon- dioxide from tissues to lungs The given slide is identified as White blood cells . WBC’s are colourless and they have nucleus.
. They are also known as Leucocytes . They show amoeboid movements. .
They fight against germs and other foreign bodies and thus protect the body from microbial infections and diseases. . There are five different types of WBC namely Neutrophils, Eosinophils, Basophils, Lymphocytes and Monocytes . IDENTIFICATION OF ENDOCRINE GLANDS Aim: To identify the endocrine gland, its location, hormone secreted and functions - Thyroid gland and Pancreas Materials Required: .
Endocrine glands – (a) Thyroid gland (b) Pancreas – Islets of Langerhans . Any one endocrine gland should be flag labelled. For the purpose of flag labelling a model / a chart / photograph showing all endocrine glands should be used. (Mark the endocrine glands mentioned for the practical) Identification: Identify the flagg labelled endocrine gland, write its location, the hormones secreted and its functions.
Pineal gland Hypothalamus Pituitary gland Thyroid gland Pancreas Adrenal glands Thymus Ovary (in female) Testis (in male) (a) Thyroid gland Identification: The flag labelled endocrine gland is identified as Thyroid gland Location: Thyroid gland is a bilobed gland located in the neck region on either side of the trachea. Hormones secreted: Triiodothyronine (T3) and Thyroxine (T4) Functions of Hormones: . Thyroid hormones increases the basal metabolic rate (BMR). .
It increases the body temperature. . It regulates metabolism Practicals . It is required for normal growth and development .
It is also known as personality hormone. . Deficiency of thyroxine results in simple goiter, myxoedema (in adults) and cretinism (in children). .
Excess secretion causes Grave’s diseases. (b) Pancreas – Islets of Langerhans Identification: The flag labelled endocrine gland is identified as Islets of Langerhans in the Pancreas. Location: Islets of Langerhans are seen embedded in the pancreas which is located in the abdominal region. Hormones secreted: .
α cells secrete glucagon . β