Examlex
Which of the following is not a component of the appendicular skeleton?
Thyroid Gland
An endocrine organ located in the neck, producing hormones that regulate metabolism and energy.
Melatonin
A hormone produced by the pineal gland that regulates sleep-wake cycles.
Oxytocin
A hormone and neurotransmitter often associated with social bonding, sexual reproduction, childbirth, and the period after childbirth.
Dizygotic Twins
Also known as fraternal twins, are siblings born at the same time but originating from separate eggs fertilized by separate sperm.
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