View
213
Download
0
Tags:
Embed Size (px)
Citation preview
Respiratory handout will be posted on Friday
Quiz #4 available through Fridayat 6pm
Assignment #2 due Tuesday by1:40pm! Please print your papersif possible.
Conducting (large) artery
Distributing (medium) artery
Resistance (small) artery• arterioles• metarterioles
Fig. 21.4(TE Art)Carotid body
Common carotidartery
Aortic bodyAortic arch
Carotid sinus
Baroreceptors
Baroreceptors
Fig. 16.1(TE Art)
GlossopharyngealNerve (CN IX)
Vagus nerve(CN X)
Baroreceptorssense increasedblood pressure
Heart rate decreases
1. Conducting arteries contract & recoilWith increasing and decreasing pressure
2. Carotid sinusesmeasuring pressure
HighBP
Lower HR
2 ways to maintain constant blood pressure
Continuous
Fenestratedsinusoids
pericyte
Endothelial cell
hepatocyte
• Clefts• Tight junctions
• Clefts • Pores
Fig. 21.10(TE Art)Distribution of blood
Pulmonary18%
Veins54%
Systemic70%
Heart12%
Arteries11%
Capillaries5%
Fig. 21.12(TE Art)
1 capillary bed
Portal system(2 capillary beds)
Arteriovenousanastomosis
Arterial anastomosesVenous anastomoses