Question

Explain the structure, function &characteristics of heart with a detailed figure.(Life processes _chapter6_grade 10)​

Answer 1

Required Answers:

Here in this question, we have to list out the functions, characteristics and some important points in the structure of the heart along with anatomy of heart (diagram).

STRUCTURE:

• It is a cone shaped organ about the size of our closed fist.
• It is 4 chambered in mammals and aves.
• It is protected by the sternum and ribcage.
• It is little pointing towards the left (Max. cases)
• It is covered by pericardium and protected by paricardial fluid.
• The right and left chambers are separated by septum.
• They also have valves to prevent the back flow of blood.

✏️ Refer to attachment - (1$)$

FUNCTIONS:

• It is the pumping organ.
• It pumps blood throughout the body.
• Blood from the body comes to right atrium and moves to right ventricle through mitral valve.
• It pushes this blood to the lungs for oxygenation.
• The blood then comes to left atrium and moves to light ventricle through tricuspid valve.
• The left atrium pumps this oxygenated blood to the organs for providing them O2 through blood.

✏️ Refer to attachment -(2)

CHARACTERISTICS:

• Mammals have myogenic heart which means it is controlled by the muscles.
• They muscles appears rich red in colour because of high amount of oxygen and glucose.
• They are around 250 gm in females♀️ and 300 gm in males♂️.
• The cardiac muscles never get fatigued.
• Until the heart works, everyone is alive.

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