exocrine and endocrine glands

anatomical anatomy apical apocrine artery basal blood bloodstream body bood capilaries cavity cell cells clipart corneum corpuscle cross dermis drawing duct endocrine epidermis erector exocrine fiber follicle gland glands hair holocrine hormone hormones human illustration lamina layer lipid medical merocrine organ organs pore science scientific sebaceous secrete section sense sensory shaft skin stratum subcutaneous substance surface sweat synthesizes system tissue touch vector vein vessel viscous