Human Anatomy Chapter 1: The Human Body – An Orientation

Comprehensive vocabulary flashcards for Chapter 1 of Human Anatomy, covering subdisciplines, structural organization, regional terminology, directional terms, body planes, and cavities.

Anatomy

The study of the structure of the human body.

Physiology

The study of body function.

Gross anatomy

The study of structures visible to the naked eye.

Regional anatomy

The study of structures within a particular body region.

Systemic anatomy

The study of structures belonging to a particular organ system.

Surface anatomy

The study of internal structures as they relate to the external body surface.

Microscopic anatomy / Histology

The study of structures that require magnification.

Developmental anatomy

The study of structural changes occurring throughout life.

Embryology

The study of development before birth.

Pathological anatomy

The study of structural changes associated with disease.

Radiographic anatomy

Anatomy visualized using medical imaging.

Levels of Structural Organization

The sequence from simplest to most complex: Chemical → Cellular → Tissue → Organ → Organ System → Organismal.

Macromolecules

Large molecules formed at the chemical level, including carbohydrates, lipids, proteins, and nucleic acids.

Tissue

Groups of similar cells and associated extracellular material.

Four major tissue types

Epithelial, Connective, Muscle, and Nervous.

Organ

A discrete structure composed of multiple tissue types, such as the brain, liver, or heart.

Anatomical Position

Standard position where the person is standing erect, facing forward, eyes directed forward, feet together, upper limbs at the sides, palms facing anteriorly, and thumbs pointing away.

Axial Region

The main axis of the body consisting of the head, neck, and trunk.

Appendicular Region

The region including the body's appendages, which are the upper and lower limbs.

Cephalic

Regional term referring to the head.

Cervical

Regional term referring to the neck.

Axillary

Regional term referring to the armpit.

Brachial

Regional term referring to the arm.

Antecubital

Regional term referring to the front of the elbow.

Antebrachial

Regional term referring to the forearm.

Carpal

Regional term referring to the wrist.

Pollex

Regional term referring to the thumb.

Coxal

Regional term referring to the hip.

Femoral

Regional term referring to the thigh.

Crural

Regional term referring to the anterior leg.

Hallux

Regional term referring to the great toe.

Otic

Regional term referring to the ear.

Occipital

Regional term referring to the back of the head.

Lumbar

Regional term referring to the lower back.

Popliteal

Regional term referring to the back of the knee.

Sural

Regional term referring to the calf.

Plantar

Regional term referring to the sole of the foot.

Superior (cranial)

Toward the head or above.

Inferior (caudal)

Toward the lower part of the body or below.

Anterior (ventral)

Toward the front of the body.

Posterior (dorsal)

Toward the back of the body.

Medial

Toward the body's midline.

Lateral

Away from the body's midline.

Proximal

Closer to the origin or point of attachment (used for limbs).

Distal

Farther from the origin or point of attachment (used for limbs).

Superficial

Toward or at the body surface.

Deep

Farther from the body surface; more internal.

Ipsilateral

Structures located on the same side of the body.

Contralateral

Structures located on opposite sides of the body.

Sagittal Plane

A vertical plane dividing the body into right and left portions.

Midsagittal / Median Plane

A vertical plane that passes directly through the midline, dividing the body into right and left portions along the midline.

Frontal / Coronal Plane

A vertical plane dividing the body into anterior and posterior portions.

Transverse Plane

A horizontal plane dividing the body into superior and inferior portions.

Oblique Section

A section made diagonally between the horizontal and vertical planes.

Tube-within-a-tube

A basic human body plan where an inner tube (digestive tract) is surrounded by an outer body tube.

Notochord

An embryonic structure near the developing spinal cord; in the adult, the vertebral column occupies its region.

Dorsal Body Cavity

Body cavity consisting of the cranial cavity (brain) and the vertebral cavity (spinal cord).

Ventral Body Cavity

Body cavity divided into the thoracic cavity and the abdominopelvic cavity.

Diaphragm

The structure that separates the thoracic cavity from the abdominopelvic cavity.

Mediastinum

The central region of the thoracic cavity between the lungs containing the heart, esophagus, and trachea.

Parietal Serosa

Serous membrane that lines the outer wall of the cavity.

Visceral Serosa

Serous membrane that covers the surface of the organ.

Pleura

The serous membrane associated with the lungs.

Pericardium

The serous membrane associated with the heart.

Peritoneum

The serous membrane associated with organs of the abdominopelvic cavity.

Retroperitoneal

An organ that lies posterior to the peritoneum rather than within the peritoneal cavity, such as the kidney.

Serous Fluid

Fluid produced by serous membranes that allows organs to slide with minimal friction.