Apex of urinary bladder

Urinary

Apical axillary lymph node

Immune/Lymphatic

Apical region of left ventricle

Cardiovascular

Apocrine sweat gland

Integumentary

Aponeurosis

Muscular

Appendage girdle complex

Appendage girdle region

Appendicular artery

Cardiovascular

Appendicular skeletal system

Musculoskeletal

Appendicular skeleton

Musculoskeletal

Appendix

Digestive

Appendix epididymis

Reproductive

Appendix testis

Reproductive

Arachnoid barrier layer

Nervous

Arachnoid mater

Nervous

Arachnoid trabecula

Nervous

Arachnoid villus

Nervous

Arch of aorta

Cardiovascular

Arch of atlas

Musculoskeletal

Archicortex

Nervous

Arcuate artery of foot

Cardiovascular

Arcuate fasciculus

Nervous

Arcuate ligament

Respiratory

Arcuate nucleus of hypothalamus

Nervous

Area postrema

Nervous

Areola

Areolar connective tissue

Areolar gland

Integumentary

Areolar sweat gland

Integumentary

Arrector muscle of hair

Muscular

Arrector pili muscles

Integumentary

Arteriole smooth muscle

Cardiovascular

Arterioles

Cardiovascular

Artery

Cardiovascular

Artery of lower lip

Cardiovascular

Artery of pterygoid canal

Cardiovascular

Artery of upper lip

Cardiovascular

Artery smooth muscle tissue

Cardiovascular

Artery wall

Cardiovascular

Articular capsule

Articular capsule of glenohumeral joint

Musculoskeletal

Articular capsule of hip joint

Musculoskeletal

Articular cartilage of joint

Musculoskeletal

Aryepiglottic fold

Respiratory

Aryepiglotticus muscle

Respiratory

Arytenoid cartilage

Respiratory

Ascending aorta

Cardiovascular

Ascending branch of left colic artery

Cardiovascular

Ascending cervical artery

Cardiovascular

Ascending colon

Digestive

Ascending limb of loop of Henle

Urinary

Ascending palatine artery

Cardiovascular

Ascending pharyngeal artery

Cardiovascular

Atlanto-axial joint

Musculoskeletal

Atlanto-occipital joint

Musculoskeletal

Atrial septum primum

Cardiovascular

Atrial septum secundum

Cardiovascular

Atrioventricular nodal artery

Cardiovascular

Atrioventricular node

Cardiovascular

Atrioventricular region

Cardiovascular

Atrioventricular septum

Cardiovascular

Atrioventricular valve

Cardiovascular

Atrium auricular region

Cardiovascular

Atypical epithelium

Auditory cortex

Nervous

Auditory ossicle bone

Sensory (Ear)

Auditory radiation

Nervous

Auricle (pinna)

Sensory (Ear)

Auricular cartilage

Sensory (Ear)

Auricular muscle

Sensory (Ear)

Autonomic ganglia

Nervous

Autonomic nerve

Nervous

Autonomic nerve plexus

Nervous

Autonomic nervous system

Nervous

Autopod region

Axial skeletal system

Musculoskeletal

Axilla

Axilla skin

Integumentary

Axillary artery

Cardiovascular

Axillary lymph node

Immune/Lymphatic

Axillary nerve

Nervous

Axillary tail of breast

Axillary vein

Cardiovascular

Axon tract

Nervous

Azygos vein

Cardiovascular

Bachmann's bundle

Cardiovascular

Baroreceptor

Cardiovascular

Basal forebrain

Nervous

Basal ganglia

Nervous

Basal layer of endometrium

Reproductive

Basal nucleus of telencephalon

Nervous

Basal part of pons

Nervous

Basal vein

Cardiovascular

Basal zone of heart

Cardiovascular

Base of prostate

Reproductive

Basicranium

Musculoskeletal

Basilar artery

Cardiovascular

Basilic vein

Cardiovascular

Basioccipital bone

Musculoskeletal

Basiotic bone

Musculoskeletal