• 脈拍みゃくはく — pulse rate
• 人脈じんみゃく — personal connections
• 静脈じょうみゃく — vein
• 山脈さんみゃく — mountain range
• 命脈めいみゃく — life, fate

脈 combines the 肉 (にくづき) radical, which relates to the body, with the character for "command/signal" (historically from 音 + 攴), forming a kanji that originally referred to the flow of blood or vital energy. The meaning later expanded to abstract ideas like lineage, sequence, or even opportunity.

脈拍みゃくはくを 測はかってください。
Please check your pulse.

彼かれとは 脈みゃくがありそうです。
I think there's a chance with him. (romantic implication)

ミャク (myaku) is the only common reading for 脈. It appears in medical, geographic, and social contexts — from heartbeats to mountain ranges to social ties.