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  2. Cervical spinal nerve 5 - Wikipedia

    en.wikipedia.org/wiki/Cervical_spinal_nerve_5

    The cervical spinal nerve 5 (C5) is a spinal nerve of the cervical segment. [1]It originates from the spinal column from above the cervical vertebra 5 (C5). It contributes to the phrenic nerve, long thoracic nerve, and dorsal scapular nerve before joining cervical spinal nerve 6 to form the upper trunk, a trunk of the brachial plexus, which then forms the lateral cord, and finally the ...

  3. Phrenic nerve - Wikipedia

    en.wikipedia.org/wiki/Phrenic_nerve

    In humans, the right and left phrenic nerves are primarily supplied by the C4 spinal nerve, but there is also a contribution from the C3 and C5 spinal nerves. From its origin in the neck, the nerve travels downward into the chest to pass between the heart and lungs towards the diaphragm.

  4. Cardiac plexus - Wikipedia

    en.wikipedia.org/wiki/Cardiac_plexus

    The superficial part of the cardiac plexus lies beneath the aortic arch, in front of the right pulmonary artery.It is formed by the superior cervical cardiac branch of the left sympathetic trunk and the inferior cardiac branch of the left vagus nerve. [1]

  5. Dermatome (anatomy) - Wikipedia

    en.wikipedia.org/wiki/Dermatome_(anatomy)

    C5 – On the lateral (radial) side of the antecubital fossa, just proximally to the elbow. C6 – On the dorsal surface of the proximal phalanx of the thumb. C7 – On the dorsal surface of the proximal phalanx of the middle finger. C8 – On the dorsal surface of the proximal phalanx of the little finger.

  6. Cervical ganglia - Wikipedia

    en.wikipedia.org/wiki/Cervical_ganglia

    – adjacent to C7; target: heart, lower neck, arm, posterior cranial arteries Nerves emerging from cervical sympathetic ganglia contribute to the cardiac plexus , among other things. Unlike all other ganglia, the medial branches of the cervical ganglia are 95% postganglionic axons .

  7. Middle cervical ganglion - Wikipedia

    en.wikipedia.org/wiki/Middle_cervical_ganglion

    Gray rami communicantes – join the anterior rami [citation needed] of the cervical nerves C5–C6, sometimes also C4 and C7. [1] Thyroid branches – pass alongside the inferior thyroid artery to the thyroid gland. [1] Middle cardiac nerve – descends through the neck to reach the cardiac plexus in the thorax. [1]

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  9. Heart - Wikipedia

    en.wikipedia.org/wiki/Heart

    The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]