Question

1. describe the structure of the heart
2. List the main components of blood
3. define heartbeat and pulse

Answer all the THREE

Answer 1

Answer:

1.The heart is divided into four chambers consisting of two atria and two ventricles; the atria receive blood, while the ventricles pump blood. The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus; blood then moves to the right ventricle where it is pumped to the lungs.

2.Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.

3.Heart rate is the number of times per minute that the heart contracts - the number of heart beats per minute (bpm). ... Pulse is the mechanical pulse of blood flow through the capillaries caused by the contractions of the heart per minute.

Answer 2

1.. The heart is divided into four chambers consisting of two atria and two ventricles; the atria receive blood, while the ventricles pump blood. The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus; blood then moves to the right ventricle where it is pumped to the lungs.

2.. In humans, it includes plasma (the liquid portion), blood cells (which come in both red and white varieties), and cell fragments called platelets. Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in.

3.. Heart rate is the number of times per minute that the heart contracts - the number of heart beats per minute (bpm). ... Pulse is the mechanical pulse of blood flow through the capillaries caused by the contractions of the heart per minute.

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