Blood pressure, Biology

Assignment Help:

An adequate level of pressure is needed in the arteries to keep the blood flowing through the cardiovascular system. The chief determinant of arterial pressure is the volume of blood in the arteries and the important determinants of this are the cardiac output and the peripheral vascular resistance. The resistance offered by the arterioles accounts for almost half the total resistance in the systemic circulation. The muscle in the arterial wall allows them to constrict or dilate. When they constrict, the resistance increases and the blood pressure increases. The vasomotor centre in the medulla when stimulated sends impulses via  the sympathetic to the smooth muscle in the arteries, arterioles and veins which results in their constriction.


Related Discussions:- Blood pressure

Chapter-2, multiple choise question

multiple choise question

How can coacervates formed of phospholipids or polypeptides, How can coacer...

How can coacervates be formed of phospholipids or polypeptides? Phospholipids are amphipathic molecules, i.e., they present a polar portion and a nonpolar portion. In contact w

PHYLUM ANNELIDA, GERENAL CHARACTERICS OF PHYLUM ANNELIDA

GERENAL CHARACTERICS OF PHYLUM ANNELIDA

Selective destruction - wildlife, Selective Destruction - Wildlife The...

Selective Destruction - Wildlife The selective destruction of one species of an existing fauna can produce equally unfortunate results. The perfect demonstration of unexpected

Explain post myocardial infarction surgery indications , Explain Post Myoca...

Explain Post Myocardial Infarction Surgery Indications ? Indications for Surgery :  Presence of ventricular septal rupture is an indication for surgery. Timing of surgery is

Explain fetal development, Explain Fetal Development? The medical profe...

Explain Fetal Development? The medical profession divides pregnancy into three-month stages called trimesters. At the end of the first trimester, the fetus is only about 5 cm l

What is pulmonary stenosis, Pulmonary Stenosis :  The obstruction may be v...

Pulmonary Stenosis :  The obstruction may be valvar, infundibular or supra valvar.

Define regulation and excretion of sodium and chloride, Define Regulation a...

Define Regulation and Excretion of sodium and chloride? Renal excretion and retention of these elements is closely regulated. The total content of body sodium especially the co

Stimulents, STIMULENT S - It makes a person more wakeful, alert and ac...

STIMULENT S - It makes a person more wakeful, alert and active. (i) Caffeine ( C 8 H 10 N 4 O 2 ) - It is 1,3,7-trimethylxanthine obtained from tea leaves ( Thea si

Excretory organs, The excretory organs and excretory materials of plants an...

The excretory organs and excretory materials of plants and animals

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd