of the human heart. Aim: To observe and draw a labelled sketch of L.S of human heart and describe the structure. Materials Required: Model showing the L.S of human heart Observation: The given model is identified as L.S. of human heart .
The human heart has four chambers. It is made up of two auricles and two ventricles . The auricles are separated by interauricular septum and ventricles are separated by interventricular septum. It prevents the mixing of oxygenated and deoxygenated blood.
. Tricuspid valve - It is located between the right auricle and the right ventricle . Bicuspid valve - It is located between the left auricle and the left ventricle . The heart is covered by a protective double walled membrane called pericardium .
The heart pumps blood to all parts of the body. Identification of L.S of the human brain. Aim: To observe and draw a labelled sketch of L.S of human brain and comment on it Materials Required Model showing the L.S of human brain Superior vena cava Aorta Pulmonary artery Pulmonary vein Left atrium Mitral valve Aortic valve Left ventricle Right atrium Pulmonary valve Tricuspid valve Right ventricle Practicals Identification: The given model is identified as L.S. of human brain .
The brain is enclosed in the cranial cavity . It is the controlling centre of all the body activities. . It is covered by three connective tissue membrane or meninges: Duramater Arachnoid membrane and Piamater .
The human brain is divided into three parts namely forebrain, midbrain and hindbrain Cerebrum Hypothalamus Pituitary gland Pons Medulla Brain stem Cerebellum Midbrain Ventricles Corpus callosum . IDENTIFICATION OF BLOOD CELLS Aim: Identification of blood cells (Red blood cells and white blood cells). To draw a neat labelled diagram and write a note on the blood cells identified. Materials Required Permanent prepared slides of blood cells.
Identification: The given slide is identified as Red blood cells . They are biconcave and disc shaped. . They are also known as erythrocytes .
Mature mammalian RBC’s do not have nucleus. . Haemoglobin is a