Reproductive System, Part 2 - Male Reproductive System: Crash Course Anatomy & Physiology #41
10:44
YouTubeCrashCourse
Reproductive System, Part 2 - Male Reproductive System: Crash Course Anatomy & Physiology #41
Our month-long exploration of human reproduction continues with a look at testicular anatomy, the steps of sperm production, and how it’s influenced by gonadotropin and testosterone. Hank also explains how sperm mature, and how they leave the body on a tide of glandular secretions during ejaculation. Pssst... we made flashcards to help you ...
已浏览 323.3万 次2015年11月9日
Lion Vs Python Fight
7 Rarest And Most Unique Lions In The World
11:48
7 Rarest And Most Unique Lions In The World
YouTubeForest Mysteries
已浏览 117.7万 次7 个月之前
Lion Uprising: The King Defends His Throne (Full Episode) | Savage Kingdom
50:21
Lion Uprising: The King Defends His Throne (Full Episode) | Savage Kingdom
YouTubeNat Geo Animals
已浏览 251.9万 次2023年3月20日
Three Adult Lions Fight Four Young Lions | Our World
7:21
Three Adult Lions Fight Four Young Lions | Our World
YouTubeOur World
已浏览 362万 次2023年9月8日
热门视频
FULL VIDEO: Male reproductive system - Human Anatomy | Kenhub
17:06
FULL VIDEO: Male reproductive system - Human Anatomy | Kenhub
YouTubeKenhub - Learn Human
已浏览 225.7万 次2022年10月20日
Male Reproductive System
8:59
Male Reproductive System
YouTubeDr Matt & Dr Mike
已浏览 128.5万 次2020年10月2日
Anatomy of Male Reproductive System | Model
14:24
Anatomy of Male Reproductive System | Model
YouTubeNinja Nerd
已浏览 100.2万 次2017年7月25日
Lion and Python Facts
Lion Cubs Are Introduced To Their Father | Predator Perspective | Love Nature
10:43
Lion Cubs Are Introduced To Their Father | Predator Perspective | Love Nature
YouTubeLove Nature
已浏览 1220.6万 次2020年9月28日
Lions 101 | Nat Geo Wild
4:30
Lions 101 | Nat Geo Wild
YouTubeNat Geo Animals
已浏览 469.4万 次2017年12月16日
15 Most Incredible Lion Attacks Caught On Camera
17:52
15 Most Incredible Lion Attacks Caught On Camera
YouTubeVlambose
已浏览 1367.2万 次2022年12月24日