In this video, the motion of finger flexion is occurring at the metacarpophalangeal (MCP) and interphalangeal (IP) joints while squeezing the ball. This motion is controlled by concentric muscle contraction against the resistance from the ball. Concentric metacarpophalangeal (MCP) and interphalangeal (IP) joint flexion is demonstrated from a position of 90⁰ of elbow flexion as seen from a front or anterior view.
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Hi, I’m really confused on the secretion of melatonin! Does it come from the pineal gland or ganglion cell, or are they both the same thing? I’m soooooo confused, please help me
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pineal body secretes melatonin 😀
pineal body secretes melatonin 😀