{"id":3466,"date":"2020-12-29T12:42:23","date_gmt":"2020-12-29T11:42:23","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/upper-limb\/arm\/"},"modified":"2021-02-01T19:50:37","modified_gmt":"2021-02-01T18:50:37","slug":"arm","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/upper-limb\/arm\/","title":{"rendered":"Arm"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><div class=\"intro\">The arm is the part of the upper limb that spans between the <strong>shoulder <\/strong>and the <strong>elbow<\/strong>.<\/div><\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n<span class=\"block-heading\" id=\"header_1\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Regions<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_1\">\n\n\n<p class=\"wp-block-paragraph\">The regions of the arm include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Anterior brachial region<\/strong><\/li><li><strong>Posterior brachial region<\/strong><\/li><\/ul>\n\n\n<\/span><span class=\"block-heading\" id=\"header_2\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Bones<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_2\">\n\n\n<p class=\"wp-block-paragraph\">The bony arm consists of the <strong>humerus<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gray&#8217;s Anatomy specifies the middle and distal parts of the humerus to belong to the arm, together with the proximal portions of the <strong>radius<\/strong> and <strong>ulna<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/humerus_openstax.png\" target=\"_blank\" title=\"Arm\"><img decoding=\"async\" src=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/humerus_openstax-475x600.png\" alt=\"\" class=\"wp-image-23835\"\/><\/a><figcaption><strong>The humerus<\/strong> (Credit: OpenStax, CC BY-SA 4.0)<\/figcaption><\/figure><\/div>\n\n\n<\/span><span class=\"block-heading\" id=\"header_3\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Muscles<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_3\">\n\n\n<p class=\"wp-block-paragraph\">The 5 muscles of the arm include:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>Coracobrachialis<\/strong><\/li><li><strong>Biceps brachii<\/strong><\/li><li><strong>Brachialis<\/strong><\/li><li><strong>Triceps brachii<\/strong><\/li><li><strong>Anconeus<\/strong><\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">They are grouped into anterior and posterior compartments by an intermuscular septum.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/muscles_arm.png\" target=\"_blank\" title=\"Arm\"><img decoding=\"async\" src=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/muscles_arm-600x484.png\" alt=\"\" class=\"wp-image-23931\"\/><\/a><figcaption><strong>Muscles of the arm and forearm<\/strong> (Credit: OpenStax, CC BY-SA 4.0)<\/figcaption><\/figure><\/div>\n\n\n<\/span><span class=\"block-heading\" id=\"header_4\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Joints<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_4\">\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;<strong>elbow joint<\/strong> is located at the distal part of the arm, attaching it to the forearm.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><a href=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/elbow-joint.png\" target=\"_blank\" title=\"Arm\"><img decoding=\"async\" src=\"https:\/\/meddists.com\/wp-content\/uploads\/2020\/02\/elbow-joint-600x481.png\" alt=\"\" class=\"wp-image-23979\"\/><\/a><figcaption><strong>The elbow joint<\/strong> (Credit: OpenStax, CC BY-SA 4.0)<\/figcaption><\/figure><\/div>\n\n\n<\/span><span class=\"block-heading\" id=\"header_5\">\n<h4 class=\"wp-block-heading\" class=\"wp-block-heading\" class=\"title_collection title1\">Neurovasculature<\/h4>\n<\/span><span class=\"block-content\" id=\"contents_5\">\n\n\n<ul class=\"wp-block-list\"><li>The <strong>brachial artery&nbsp;<\/strong>provides blood supply to the arm through several branches.<\/li><li>Deep (<strong>brachial veins<\/strong>) and superficial veins (<strong>basilic <\/strong>and <strong>cephalic veins<\/strong>) drain the venous blood.<\/li><li>There are 4 main nerves innervating the arm:<ul><li>The <strong>musculocutaneous nerve<\/strong><\/li><li>The <strong>median nerve<\/strong><\/li><li>The <strong>ulnar nerve<\/strong><\/li><li>The <strong>radial nerve<\/strong><\/li><\/ul><\/li><li>Lymph drained from the arm joins the lymph drained from the hand and forearm, continuing towards the axilla.<\/li><\/ul>\n<\/span><div id=\"the_titles\" style=\"display:none;\"><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Regions<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Bones<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Muscles<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Joints<\/h4><h4 class=\"wp-block-heading\" class=\"wp-block-heading\">Neurovasculature<\/h4><\/div>","protected":false},"excerpt":{"rendered":"<p>Regions The regions of the arm include: Anterior brachial region Posterior brachial region Bones The bony arm consists of the humerus. Gray&#8217;s Anatomy specifies the middle and distal parts of the humerus to belong to the arm, together with the proximal portions of the radius and ulna. Muscles The 5 muscles of the arm include: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3462,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3466","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Arm &#8211; Meddists<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/upper-limb\/arm\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/anatomy\\\/upper-limb\\\/arm\\\/\",\"url\":\"https:\\\/\\\/meddists.com\\\/learn\\\/pre-clinical\\\/anatomy\\\/upper-limb\\\/arm\\\/\",\"name\":\"Arm &#8211; 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