Human Anatomy and Cell Biology Overview

Vocabulary flashcards reviewing cellular anatomy, major anatomical body regions, and abdominal regions and quadrants.

Prototypical Human Cell

A generalized diagrammatic model illustrating the major structural components and organelles of a human cell.

Nucleus

The membrane-enclosed organelle that houses genetic material in the form of chromatin and contains the nucleolus.

Nucleolus

A prominent structure inside the cell nucleus involved in ribosomal RNA synthesis and ribosome assembly.

Chromatin

The complex of DNA and proteins found within the nucleus of eukaryotic cells.

Mitochondria

Double-membrane organelles responsible for cellular respiration and generating ATP energy for the cell.

Rough Endoplasmic Reticulum

A network of membrane-bound sacs studded with ribosomes on its outer surface, specialized for protein synthesis and processing.

Smooth Endoplasmic Reticulum

A membrane network lacking ribosomes that functions in lipid synthesis and metabolic carbohydrate processing.

Ribosomes

Cellular structures that synthesize proteins, located floating freely in the cytoplasm or bound to the rough endoplasmic reticulum.

Golgi Apparatus

An organelle composed of flattened sacs that modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Golgi Vesicle

Small membrane-bound transport sacs that bud off from or fuse with the Golgi apparatus.

Lysosome

A membrane-bound organelle containing digestive enzymes that break down cellular waste materials and foreign debris.

Peroxisome

A small organelle containing enzymes that perform oxidative reactions to neutralize toxic substances.

Centrosome

A structure near the nucleus that serves as the primary microtubule-organizing center during cell division.

Microtubule

A tubular, rigid cytoskeletal element involved in cell structure, intracellular transport, and mitotic spindle formation.

Microfilament

A thin cytoskeletal filament made of actin that provides structural support and assists in cellular movements.

Intermediate Filament

A class of cytoskeletal fibers that provide mechanical strength and stability to the cell structure.

Plasma Membrane

The phospholipid bilayer that encloses the cell contents and regulates the movement of molecules in and out of the cell.

Cytoplasm

The fluid material and structures enclosed within the plasma membrane surrounding the nucleus.

Vacuole

A membrane-bound cavity within the cytoplasm involved in cellular storage.

Secretory Vesicle

A vesicle that transports cellular substances to the plasma membrane for exocytosis into the extracellular space.

Regions of the Human Body

Anatomical division system identifying specific body areas from both anterior and posterior anatomical perspectives.

Cephalic

Anatomical term referring to the head region.

Cranial

Anatomical region referring to the portion of the skull enclosing the brain.

Frontal

Anatomical region referring to the forehead.

Ocular

Anatomical region referring to the eye.

Buccal

Anatomical region referring to the cheek.

Auricular

Anatomical region referring to the ear.

Nasal

Anatomical region referring to the nose.

Oral

Anatomical region referring to the mouth.

Mental

Anatomical region referring to the chin.

Cervical

Anatomical region referring to the neck.

Axillary

Anatomical region referring to the armpit.

Brachial

Anatomical region referring to the arm (upper arm).

Antecubital

Anatomical region referring to the front of the elbow.

Antebrachial

Anatomical region referring to the forearm.

Carpal

Anatomical region referring to the wrist.

Pollex

Anatomical term referring specifically to the thumb.

Palmar

Anatomical region referring to the palm of the hand.

Digital (phalangeal)

Anatomical region referring to the fingers or toes.

Patellar

Anatomical region referring to the anterior surface of the knee (kneecap).

Crural

Anatomical region referring to the anterior leg (shin area).

Tarsal

Anatomical region referring to the ankle.

Hallux

Anatomical term referring specifically to the great toe (big toe).

Acromial

Anatomical region referring to the point of the shoulder.

Dorsal

Anatomical region referring to the back.

Olecranal

Anatomical region referring to the posterior surface of the elbow.

Lumbar

Anatomical region referring to the lower back between the ribs and hips.

Sacral

Anatomical region referring to the posterior area between the hip bones.

Gluteal

Anatomical region referring to the buttocks.

Popliteal

Anatomical region referring to the area behind the knee.

Sural

Anatomical region referring to the posterior leg (calf).

Calcaneal

Anatomical region referring to the heel of the foot.

Plantar

Anatomical region referring to the sole of the foot.

Thoracic

Anatomical region referring to the chest area.

Abdominal

Anatomical region referring to the abdomen.

Umbilical

Anatomical region referring to the navel area.

Coxal

Anatomical region referring to the hip.

Inguinal

Anatomical region referring to the groin.

Femoral

Anatomical region referring to the thigh.

Abdominal Quadrants and Regions

Anatomical breakdown dividing the abdominopelvic cavity into nine distinct regions or four functional quadrants inferior to the diaphragm.

Epigastric Region

The upper central abdominal region located above the umbilical region and superior to the stomach.

Right Hypochondriac Region

The upper right abdominal region located superior to the right lumbar region and lateral to the epigastric region.

Left Hypochondriac Region

The upper left abdominal region located superior to the left lumbar region and lateral to the epigastric region.

Umbilical Region

The central abdominal region located surrounding the navel.

Right Lumbar Region

The middle right abdominal region located lateral to the umbilical region.

Left Lumbar Region

The middle left abdominal region located lateral to the umbilical region.

Hypogastric Region

The lower central abdominal region located inferior to the umbilical region.

Right Iliac Region

The lower right abdominal region located lateral to the hypogastric region.

Left Iliac Region

The lower left abdominal region located lateral to the hypogastric region.

Right Upper Quadrant (RUQ)

The upper right quarter of the abdominal cavity inferior to the diaphragm.

Left Upper Quadrant (LUQ)

The upper left quarter of the abdominal cavity inferior to the diaphragm.

Right Lower Quadrant (RLQ)

The lower right quarter of the abdominal cavity.

Left Lower Quadrant (LLQ)

The lower left quarter of the abdominal cavity.