exam 2 ignore

Controls of BP and Blood Flow

• medulla oblongata

• Baroreceptors

• Norepinephrie and epinephrine

• Some cases auto regulated by tissue

Medulla oblongata effect

Contains cardiovascular center – group of neurons that regulate heart rate, contractility, BV diameter

What are baroreceptors?

Monitor pressure changes

Pressure sensitive sensory neurons that monitor bv wall stretching, and atria stretching

3 factors that increase BP

Norepinephrine

epinephrine

vasoconstriction

Increase of blood volume

2 numbers to BP: 120/80

What are the names of each

Systolic BP over Diastolic BP

120 / 80

Hypovolemic shock

Results from large scale blood loss ( bleeding out)

Vascular shock

Results from extreme vasodilation and decreased peripheral resistance

Cardiogenic shock

Results when an inefficient heart can’t sustain circulation

4 Homeostatic responses to shock

• activation of RAA system

• ADH secretion

• Activation of sympathetic division of ANS

• Release of local vasodilators

Venus system of digestive system drains into what first

Hepatic portal system – perfuses through liver before returning to heart

What does the descending aorta become once further down?

Thoracic aorta until you reach diaphragm

What 4 arteries give blood to diaphragm?

Right superior Phrenic Left superior Phrenic

Right inferior Phrenic Left inferior Phrenic

First, most superior branch off abdominal aorta

Celiac trunk

What arteries branch off celiac trunk

Splenic artery ( L to spleen)

Common hepatic artery ( R to Liver)

Gastric artery (up to stomach)

What 2 artery projects of abdominal aorta anteriorly

Superior mesenteric

Inferior mesenteric

Supplies intestines

Lateral to superior mesenteric are 2 arteries called…

Right middle adrenal arteries

Left middle adrenal arteries

Supplies adrenal glands

JUST Inferior and parallel to the middle suparenal arteries are…

R and L renal arteries

To kidneys

2 lower armies right above inferior mesenteric…..

L and R gonadal arteries

Testes/ovaries

2 lower branches off abdominal aorta ( each leg)

L and R Common Iliac arteries

Common Iliac arties FIRST branch off into what 2 arteries

L and R internal iliac arteries

Following lil down Common Iliac becomes what

L and R external iliac

What does the brachiocephalic trunk supply?

RIGHT side head,neck,arm

Where the vertebral arteries pass through to get to brain

Transverse foramen of cervical vertebrae