keyword

chapter 13 cardiovascular system

Monthly search volume and cost-per-click data for "chapter 13 cardiovascular system" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=chapter+13+cardiovascular+system&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
system cardiovascular	74,000	$0.9	2/20
system circulation	74,000	$0.9	2/20
cardiovascular system	33,100	$7.56	2/20
flow of the blood through the heart	14,800	$0.68	2/20
functions of the circulatory system	9,900	$0	2/20
pathway of blood through the heart	9,900	$0.02	2/20
blood circulation	5,400	$1.77	2/20
cardiovascular system chapter 13	30	$0	17/20
chapter 13 cardiovascular system answer key	20	$0	7/20
the cardiovascular system packet	20	$0	3/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=chapter+13+cardiovascular+system&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt