Answer:
Explanation:
1- the purpose of blood flow-circulatory system- is to convey Oxygenated blood, oxygen bonded with haemoglobin in the RBC with Nutrients - and distributed these through the arteries and capillaries away from the heart, to reach the cells and tissues, and transported the wastes of theses cells and tissues , with C02 through the veins back to the heart and the kidney.
2. During diastole,deoxygented blood from the inferior and superior vena cavae entering the R.atrium, passes through the tricuspid valve into the Right Ventricle. Simultaneously, oxygenated blood returning through the pulmonary veins enters the left Atrium,emptied through the bicuspid valve into the Left.Ventricle.
During systole, the two ventricles contracts. The Right ventricle contracts, the pressure of the blood forces the tricuspid valve to close,and therefore de -oxygenated blood pushes the pulmonary valves to open and blood passes through the pulmonary artery to reach the lungs where exchanges of oxygen with carbon dioxide occurs.The blood is now oxygenated and returns to the left atrium via pulmonary veins.
Simultaneously, the left ventricle contracts,the oxygenated blood it contains forced the bicuspid valve to close so that blood is forced through the aortic valve to empty into the aorta into the systemic circulation,branches of the carotid artery supplies the heart from the aorta.
The Whole cycle continues.
<span>4. The neurons that carry impulses from the eyes to the spinal cord and brain are called the Sensory neurons. Sensory neurons are nerve cells within the nervous system responsible for converting external stimuli from the organism's environment into internal electrical impulses.
5. Motor neurons carry impulses from the brain and spinal cord to and from the Muscles and glands. The motor neurons transmit impulses from the spinal cord to skeletal and smooth muscles, and therefore directly control all of our muscle movements. There are two types of motor neurons, those that travel from spinal cord to muscle (lower motor neurons) and those that travel between the brain and spinal cord (upper motor neurons)
6. The neuron's cell body has short, branched extensions called dendrites. Dendrites are tree-like extensions at the beginning of a neuron that help increase the surface are of the cell body. They receive information from other neurons and transmit electrical stimulation to the soma (cell body). They are also covered with synapses.
7. In most animals and of different neurons are clustered in bundles called nerves Axons and dendrites. Axon is the elongated fiber that extends from the cell body to the terminal endings and transmits the neural signal. The larger the diameter of the axon, the faster it transmit information. Most neurons have only one axon, they transmit impulses from the cell body and also may or may not have a myelin covering.
8. The insulating membrane that surrounds a single axon in some neurons is called the Myelin sheath. The myelin sheath is a protective covering that surrounds fibres called axons, the long thin projections that extend from the main body of anerve cell or neuron. It is composed of proteins and lipids. The main function is to protect and insulate these axons and enhance their transmission of electrical impulses.</span>
Answer:
Perfectly cube - shaped
Explanation:
If the shape of a cell is perfectly cube- shape then its volume must be calculated with an equation:
Height×Width×number of sides and number of boxes
Surface= area of volume ratio is calculated with an equation
Area /volume
if a cell has large surface area to volume into ratio means it has greater exposure to the environment.It means that flow of nutrients and gases move freely in the small cell compared to large cell.
Answer:
They concluded that these antibodies were a) Globular proteins
Explanation:
Globular proteins are known to be water-soluble, spherical in shape and to be polypeptides as well. Compared to the other options provided, the selected one is the most correct.
