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Excretory system

Draw a well - labelled diagram of a human excretory system and label the partsAnswer:

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This page contains biology notes on Neural Control and Coordination Notes Chapter 21 for Class 11

Teeth are structures useful for biting, tearing, chewing and grinding. All mammals have more or less same construction of tooth.A vertical section of a tooth shows three parts viz the crown, the neck and the root. Crown is the part lying above the gum, the neck is the part in level with the gum and the root is the part buried in the sockets of the jaw bones. The white part of the tooth is known as the enamel. This is the hardest substance present in the body. The enamel is the non living…

Human brain is one of the most complex and magnificent organs in the human body. Our brain gives us self consciousness and consciousness of our environment, processing a constant stream of sensory data.The brain’s neurons record the memory of every event in our lives.It is the organ which coordinates several muscular moments, analyzes the streams data from sensory organs, controls secretions of glands,memorizes the past experiences, controls the emotions and thoughts with touch of judgement…

Chapter Notes: Life Processes | Class 10 Biology Notes Notes for life processes chapter of class 10 science. Unique Study & Unique...

Kidneys are a pair of excretory organs located in lower back of our body.Each kidney is Reddish brown,bean shaped and measures 10-12 cm in length and 5-6cms in width. It weighs approximately 140 gms. There is a concavity in the inner side called Hilus. The renal artery, renal veins and ureter pass through this depressions of kidneys.Each kidney contains 1,000,000–1,250,000 nephrons that filter the blood.Nephrons are functional units of kidneys that filter blood and maintain Homeostasis. Now…

Biology, Respiration, School Project

Nerve cell is functional unit of nervous system.It has mainly two parts the Cyton and Axon.Cyton have several dendrites emerging from surface. Cyton gives rise to Axon from a triangular structure called axon hillock. Axon of nerve cells sometimes extend to 1 mt length in nerves of leg. Cyton something looks like a star so, it can be drawn from a basic star shape. Step 1: Draw two triangles superimposed as shown resembling a star. Step 2: Erase out the star shape leaving faint edges of the…