Biology, 18.03.2020 00:28 jumpgirll

Which observation tool allows doctors to monitor blood circulation in real time

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Answer from: dondre54

An Ultrasound is the observation tool which allows doctors to monitor blood circulation in real time.

Explanation:

The person who perform ultrasound test is known as sonographer, but for further interpretation the radiologist, cardiologist or specialists are preferred. Ultrasound Doppler can measure blood flow in a vessel or blood pressure. This will assess blood flow rate and any blockages. One instance of Doppler ultrasound is an echocardiogram (ECG). This can be applied to construct cardiovascular device pictures, and at different points to assess blood flow and cardiac tissue motion. The ultrasound from Doppler can determine the purpose and condition of cardiac valve regions, any heart defects, valvular regurgitation, or blood leakage from valves, and it can demonstrate how better heart pumps out blood.The ultrasonic flow meter is a diagnostic tool capable of approximating the rate of blood flow in a given vessel. The ultrasonic flow meter transducer contains both a transmitter element and a receiver element. The transmitter emits ultrasonic waves of a fixed frequency, which are then transmitted by the traveling red blood cells (RBCs) with whom they come into contact.

Answer from: Quest

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

Answer from: Quest

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

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