KINS 1224 Lab- Lab 4- Blood Pressure (Lab Exam 2)

blood pressure

the force that the blood exerts against a vessel wall

systolic blood pressure

pressure produced while the ventricles are contracted

diastolic blood pressure

pressure produced when the ventricles are relaxing

pulse pressure

difference between systolic and diastolic pressure

mean arterial pressure (MAP)

diastolic pressure + 1/3 pulse pressure; represents both systolic as a single number

carotid artery

artery on each side of the neck that supplies blood to the head

brachial artery

The major vessel in the upper extremity that supplies blood to the arm.

radial artery

The major artery in the forearm; it is palpable at the wrist on the thumb side.

medulla oblongata; baroreceptor

The ____________________ of the brain integrates ______________ info and can activate the cardioacceleratory center, the cardioinhibitory center, and the vasomotor center.

cardioacceleratory center, the cardioinhibitory center, and the vasomotor center

3 centers activated by baroreceptor info via the medulla oblongata

baroreceptors

mechanoreceptors that monitor BP; found in aorta and carotid arteries

cardioacceleratory center and vasomotor center

Center(s) activated by low BP

cardioinhibitory center

Center(s) activated by high BP

1- More

2- More

3- Decreased

4- Increased

5- Decreased

6- Decreased

7- Decreased

8- Vasodilation

9- Decreased

(all would be opposite for low blood pressure)

Label 1-9 (high blood pressure)

heart rate (HR)

number of heart beats per minute

sphygmomanometer

instrument to measure blood pressure

Sounds of Korotkoff

sounds that indicate the resumption of blood flow into the forearm when taking blood pressure.

stroke volume (SV)

The amount of blood ejected from the heart in one contraction (each heartbeat)

cardiac output (CO)

Volume of blood pumped by the heart per minute.

cardioacceleratory center

controls sympathetic neurons that increase the heart rate

cardioinhibitory center

controls the parasympathetic neurons that slow the heart rate

vasomotor center

adjusts blood vessel diameter for blood pressure regulation

vasoconstriction

narrowing of blood vessels

vasodilation

widening of blood vessels

systole

phase of the cardiac cycle when the chambers contract, pumping blood out of the chambers

diastole

phase of the cardiac cycle when the heart muscles relax and the chambers fill with blood; the ventricles fill with blood

Arteries--> particularly those closest to the heart (aorta)

Where is blood pressure highest?

Veins --> particularly those closest to the heart (vena cava)

Where is blood pressure lowest?

decreases

Blood pressure ________________ as the distance from the heart increases.

pulse

rhythmic expansion and contraction of an artery as blood is pumped through it by the heart.

90 mmHg (180-90)

You are a clinician and you find that your patients blood pressure is 180/90 mmHg. What is their pulse pressure?

120 mmHg (90 + 1/3 (90))

You are a clinician and you find that your patients blood pressure is 180/90 mmHg. What is their mean arterial pressure (MAP)?