_________the lungs transfer oxygen from the air to the blood it is then returned to the the heart by via the pulmonary veins

2 answers:

6 0

I believe the answer is <span>Pulmonary vein.
</span><span>Pulmonary vein receives the oxygenated blood through the alveoli of the lung and returns the oxygenated blood to the left atrium of the Heart.
</span>From this, the oxygenated blood would be pumped all over our body to support our organ system.

Julli [10]3 years ago

3 0

<h3>Answer:</h3>

<u>Pulmonary artery</u> the lungs transfer oxygen from the air to the blood it is then returned to the the heart by via the pulmonary veins

<h3>Explanation:</h3>

The pulmonary artery is a huge artery arising from the preferred covering of the right ventricle and transporting deoxygenated blood from the heart to the lungs. The pulmonary vein is the difference to the practice that veins carry oxygenated blood from the heart toward different portions of the body.

Oxygen and carbon dioxide moves to and of little air cysts in the lungs, by the walls of the capillaries, toward one blood. Blood moves the heart by the pulmonic lid, into the pulmonary vein and to particular lungs.

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Which subtype of type a fibers transmits signals that are interpreted and perceived as pain?

borishaifa [10]

Delta is a type of fibre that transmits signals that are interpreted and perceived as pain.

<h3>Delta fibres</h3>

A delta fibres (also known as A fibres) are a type of sensory fibre. They respond to cold and pressure stimuli, and as nociceptors, their stimulation is perceived as fast/first pain input. Because they are thinly myelinated, they transmit impulses quicker than unmyelinated C fibres but slower than other, thicker myelinated "A" class fibres.

Structure

They have myelinated axons that are thin (2 to 5 m in diameter) and have a moderate conduction velocity, or speed at which a nerve signal moves (2 to 30 m/s). These nerve fibres make up the afferent portion of the reflex arc that causes the body to "draw away" from noxious stimuli because they are linked to acute (sharp) pain (e.g. retracting your hand away from a hot stove). A part of A fibres is also linked to pressure and temperature perception (also known as "cold receptors" in mammals). Contrarily, slow-conducting, unmyelinated C fibres convey gradual, scorching pain.

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