Cocaine induces a sense of exhilaration by increasing the availability of dopamine and serotonin in synapses. Cocaine is among the powerful stimulants which increase the release of neurotransmitters such as nor-epinephrine, dopamine and serotonin, that affect CNS and PNS activity. Cocaine administration constricts blood vessels that are absorbing it, son snorting it is a slow way to deliver it to blood stream and eventually the brain.
Asthma is a condition which is characterized by
attacks of difficult breathing and wheezing.
<span>It is a condition related to lung disease in
which there is inflammation in bronchial tubes they become narrow, bronchial
tubes are the passageway through which air enters and leave the lungs. So when
it becomes narrow, it causes difficulty in breathing and sometimes it causes
severe attacks.</span>
Answer:
The nursing instructor has been observing nursing students initiate an IV infusion. Which action(s), if made by the nursing student, indicates that further instruction is needed? (Select all that apply.)
The nursing student:
A) cleans the insertion site with an antiseptic swab in a horizontal plane, then a vertical plane followed with a circular motion (middle to outward), allows the area to dry, then while wearing gloves, palpates the vein prior to inserting the catheter at a 10- to 30-degree angle.
B) applies the tourniquet, cleans the site, allows it to dry, performs the venipuncture, looks for blood return, advances the catheter off the style:, applies pressure above the insertion site, connects the tubing, starts the infusion, and releases the tourniquet
C) removes her gloves to tape and apply the transparent dressing over the intravenous site.
A & B shows that more instructions are needed.
Explanation:
C however can be the instruction to complete the IV infusion procedure.
When an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
<h3>What is an allosteric enzyme?</h3>
Allosteric enzymes are catalysts that exhibit a site for binding that is distinct from the active site.
Allosteric enzymes are controlled by many effector compounds that can bind to different sites.
The active site of the enzyme is the molecular domain of this protein where reactants can bind during a chemical reaction.
The heterotropic effects occur when the ligands of allosteric modulators (effectors) are linked to the enzyme.
An allosteric modulator is a molecule that binds to the enzyme in a site different to the active site and this binding alters its tridimensional conformation, thereby activating it or deactivating it.
In conclusion, when an allosteric enzyme is directly affected by a molecule that is not its substrate, this effect on the enzyme is called a heterotropic effect.
Learn more about allosteric enzymes here:
brainly.com/question/13960033
#SPJ1
