How to draw biology diagrams

The LS of kidney shows outer dark zone called the cortex and inner pale red zone called medulla which forms the main mass of the kidney. The medulla is made of number of pyramidal structures containing renal tubules or Nephrons projecting into the cavity towards the inner region of kidney called pelvis.This is the region where renal artery and renal vein enter the kidney. Free end of pelvis shows cup like depressions called calyces. Renal pyramids of medulla project into these calyces.Now…

Lungs are a pair of respiratory organs located in the chest cavity protected by rib cage. They are spongy elastic and are enclosed by two membranes called Pleura. Space between the two membranes of the Pleura is filled with fluid.Pleura protects the lungs from injury. Right lung is larger than the left lungs and it is made of three lobes while the left lung has only two lobes. A pipe like structure called Trachea carries the air from Nose through Neck, thoracic cavity and opens into two…

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…

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…

Our skin is the sense organ for touch. It contains cutaneous receptors for touch. The skin consists of two main layers called epidermis and dermis. Epidermis is the layer for protection. It has outer stratum corneum or cornified layer containing dead cells, middle granular layer containing living cells and inner malpighian layer containing the cells dividing constantly. Dermis lies below the epidermis. It is made up of elastic connective tissue. It contains sweat glands, sebaceous glands…

Excretory system

Female reproductive system has muscular elastic bag like structure called Uterus and pair of ovaries attached to it on either sides. Uterus opens into vagina through narrow cervical canal.Two tube like structures emerge out of uterus on either sides. These are called oviducts.We can start with basic shape of Uterus, later we go for oviducts and vagina. Let`s start the diagram. Step 1: Draw a inverted triangle as shown. Step 2: Draw out line of uterus around the triangle as shown. Step 3…

Tongue is made up of muscles. It contains about ten thousand taste buds. The taste buds are located in wall of the papillae.Like smell, taste is also a sense based on identifying chemicals in food and the texture. The sense of taste and smell have a close and cooperative working relationship. The sense of taste 'Gustation' involves qualities of Sweet, sour, bitter and salty. Umami is the savory flavor found in protein rich foods such as meat, seafood and cheese.It is associated with…

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…

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

Today I'll show you how to draw a brain. This human brain isn't shaded or anything, I'm just showing you how to draw the actual brain, as far as the structure goes. I have simplified the tutorial into more than 20 steps.

Science diagram

Plant cells are covered by cell wall, it is a unique feature observed in plant cells. While the cell membrane acts as the outer layer in animal cells. The plant`s cell wall is made up of Cellulose. This is considered as major difference between plant cell and an animal cell. The green parts of plants such as leaves, have cells which contain chloroplasts. Which is considered as another unique feature of plant cells. Let`s see how to draw a typical plant cell. 1. Draw a Hexagon as shown in…

Prokaryotes are the organisms which have primitive nucleus. All bacteria are prokaryotes because they lack a distinct nucleus with nuclear membrane. The cytoplasm of prokaryotic cells lacks in well defined cell organelles such as endoplasmic reticulum, Golgi apparatus, Mitochondria,centrioles, nucleoli, cytoskeleton. The size of these cells range between 1 micrometre to 3 micrometres, so they are barely visible under the light microscope. Now let's moveon to diagram. 1.Draw a capsule shape…