Biology · Endocrine System
अंतःस्रावी ग्रंथियों (endocrine glands) द्वारा स्रावित होने वाले हार्मोन सीधे ________ में छोड़े जाते हैं।
- 1वाहिकाओं (Ducts)
- 2हृदय कोष्ठ
- 3मेरुद्रव (Spinal fluid)
- 4रक्त प्रवाह✓
सही उत्तर देखें
रक्त प्रवाह
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