Meet the muscle that moves the testicles 🤝 Hey guys - want to answer Jonathan's question in the comments - can you control this muscle?? 👇 | Institute of Human Anatomy

What does normal sperm look like? 🐟💦 A normal sperm has: - A smooth, oval-shaped head that is 5-6 micrometers long and 2.5-3.5 micrometers wide (less than the size of a needle point) - A well-defined cap that covers 40% to 70% of the sperm head. - No visible abnormality of the neck, midpiece, or tail. Every male, fertile or infertile, has varying percentages of abnormally-shaped sperm. Many factors can lead to abnormally shaped sperm, including increased testicular temperature, exposure to che