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Joint is the point where two or more bones meet. Joints allow different degrees of movement. There are many articulations or joints present in the skeleton. Joints are classified based upon their structure and the kinds of movements which they permit. Three main types of joints arei. Immovable joints (Synarthroses)ii.…
Contraction is the main property of muscle. The muscle receives stimuli through the motor nerve. The teledendrites of last neurons of motor nerve, which innervate in the muscle are called "neuromotor end plates". When the nerve impulse passes to the neuromotor end plates, "acetyl choline" is released. Acetyl choline stimulates…
The muscles of a fully developed adult male can produce sufficient power to lift a weight of about 25 tonnes. In male, all the muscles make up 42% of the body weight. In woman, the muscles make up 36% of the body weight. The body consists of 650 muscles.…
DIFFERENCES BETWEEN EXCRETORY SYSTEM OF RABBIT AND FROG RABBIT FROG 1. The kidneys in rabbit are metanephric 1. The kidneys in frog are mesonephric. 2. The kidneys are dark red, bean shaped situated in the middle of the abdominal cavity. 2. Kidneys are flat, dark red structures present towards the posterior end of the body cavity.…
The nitrogenous waste product in rabbit excretory system namely, urea is synthesized in the liver. The urea is then carried to the kidneys through blood for its elimination as urine. According to cushny (1917) the mechanism of urine formation occurs in three stages namely. i. Ultrafiltration ii.…
EXCRETION - BASICS The amino acids which are transported to different tissues along with other food stuffs are involved in synthesis of essential proteins and some others for producing energy. The excess amino acids can not be stored in the animal. They undergo sequential degradation and are converted…
COAGULATION OF BLOOD MECHANISM The blood remains in a fluid state as long as it is inside the blood vessels. But when it comes in contact with external atmospheric conditions, it changes into a jelly-like mass. The blood is then said to be clotted or coagulated. When a blood clot…
The blood is red in color and circulates in the body like a river. The blood consists of a homogenous fluid called plasma constituting 55% and the remaining 45% by three types of blood corpuscles. PLASMA The plasma of the blood consists of 90% of water and remaining…
VENOUS SYSTEM OF FROG (AMPHIBIAN) AND RABBIT (MAMMAL) - SIMILARITIES AND DIFFERENCES Rabbit - Venous system Frog - Venous system 1. Coronary veins collecting the blood from the wall of heart open into left precaval vein. 1. Coronary vein collecting blood from the wall of heart opens into anterior abdominal…
The blood from various parts of the body is collected by different types of veins which constitute venous system. Coronary veins collect the venous blood from the wall of heart into the left precaval vein. The blood from the anterior and posterior ends of the body is mainly collected…
SIMILARITIES AND DIFFERENCES OF ARTERIAL SYSTEM OF MAMMAL (RABBIT) AND AMPHIBIAN (FROG) Rabbit - Arterial System Frog - Arterial System 1. The blood to different parts of the body and lungs is supplied by carotico-systemic trunk and pulmonary aortaoriginating from left ventricle and right ventricle respectively. 1. The blood to different parts of…
The circulation concerned with supply of blood to different organs is called arterial system.The heart of rabbit supplies blood to different organs of the body by means of two important aortic trunks namely I. Carotico - systemic trunk and II. Pulmonary trunk. The carotico - systemic trunk…
SIMILARITIES AND DIFFERENCES BETWEEN RABBIT HEART (MAMMAL) FROG HEART (AMPHIBIAN) Rabbit Frog 1. The heart of rabbit is four chambered with two auricles and two ventricles 1. The heart of frog is three chambered with two auricles and one ventricle. 2. Sinus venosus is absent as it is…
The circulatory system in animals is the main transport system. In lower animals like protozoa, porifera and cnidaria the transportation of oxygen and nutrients to different organs of the body and expulsion of carbon dioxide and nitrogenous wastes occur by means of diffusion through body surface. However, in higher animals…
The respiration occurs in two phases namely 1. Inspiration and 2. Expiration. The oxygen is taken inside during inspiration while carbon dioxide is expelled out during expiration. Inspiration: During inspiration the external intercostal muscles contract, so that the ribs are bent forward and outward and the sternum moves…
INTRODUCTION The energy is required for various metabolic activities in an individual. This energy is obtained by oxidation of end products of digestion at cellular level. Hence oxygen is essential for the maintenance of life. The oxygen is involved in oxidation by releasing carbon dioxide along with energy. …