1  πŸ“˜ Chapter 1 β€” Anatomical Language

1.1 Course: Anatomy & Physiology

Chapter: 1 of 5

1.2 Objectives

  • Define and demonstrate the anatomical position

  • Describe anatomical planes and body sections

  • Use correct directional and regional terminology

  • Identify body cavities, membranes, and organs

  • Describe abdominopelvic quadrants and regions

  • Identify organ systems and their functions

1.3 Prelab Activity 1.1 β€” Essential Definitions

1.3.1 Directional Terms

Term Definition
Anterior (ventral) Toward or at the front of the body
Posterior (dorsal) Toward or at the back of the body
Superior (cranial) Toward the head or upper part of the body
Inferior (caudal) Toward the lower part of the body
Lateral Away from the midline
Medial Toward the midline
Proximal Closer to the point of attachment
Distal Farther from the point of attachment
Superficial Toward the body surface
Deep Away from the body surface

1.3.2 Body Cavities

Term Definition
Cranial Cavity that houses the brain
Abdominal Cavity containing digestive organs
Pericardial Cavity surrounding the heart
Pleural Cavities surrounding the lungs
Ventral Anterior cavity containing thoracic and abdominopelvic cavities

1.3.3 Body Planes

Term Definition
Sagittal plane Divides body into left and right
Midsagittal plane Divides body into equal left and right halves
Parasagittal plane Divides body into unequal left and right sides
Frontal (coronal) plane Divides anterior and posterior portions
Transverse plane Divides superior and inferior portions
Oblique plane Cuts body at an angle

1.4 Lab Activity 1.8 β€” Abdominopelvic Quadrants

Quadrant Organs
Right Upper Quadrant (RUQ) Liver, gallbladder, duodenum, pancreas
Right Lower Quadrant (RLQ) Cecum, appendix, ileum
Left Upper Quadrant (LUQ) Stomach, spleen, pancreas
Left Lower Quadrant (LLQ) Descending colon, sigmoid colon

1.5 Abdominal Regions

Region Organs
Left hypochondriac Spleen, stomach
Epigastric Stomach, liver, pancreas
Right hypochondriac Liver, gallbladder
Left lumbar Left kidney, descending colon
Umbilical Small intestine, transverse colon
Right lumbar Right kidney, ascending colon
Left iliac Sigmoid colon
Hypogastric Urinary bladder, small intestine
Right iliac Cecum, appendix

1.6 Lab Activity 1.9 β€” Organ Systems

# System Organs
1 Integumentary Skin, hair, nails, glands
2 Skeletal Bones, cartilage, ligaments
3 Muscular Skeletal muscles, tendons
4 Nervous Brain, spinal cord, nerves
5 Endocrine Pituitary, thyroid, adrenal glands
6 Cardiovascular Heart, blood, vessels
7 Lymphatic Lymph nodes, spleen, thymus
8 Respiratory Lungs, trachea, bronchi
9 Digestive Mouth, stomach, intestines, liver
10 Urinary Kidneys, bladder, urethra
11a Male Reproductive Testes, prostate, penis
11b Female Reproductive Ovaries, uterus, vagina

1.7 Post‑Lab Activity 1.1 β€” Fill in the Blanks

1.7.1 Systems

  • The integumentary system forms the external body covering.

  • The integumentary system protects deeper tissues from injury.

  • The integumentary system synthesizes vitamin D.

  • The endocrine system secretes hormones into the blood.

  • The respiratory system supplies oxygen and removes carbon dioxide.

  • The reproductive system produces sex cells and hormones.

1.7.2 Homeostasis

  • Positive feedback amplifies a response.

  • Negative feedback reduces change toward a set point.

1.7.3 Position Terms

  • Knees are superior to ankles

  • Thumbs are lateral to pinkies

  • Spine is posterior to the sternum

  • Chest is anterior to shoulder blades

  • Navel is anterior to lower back

  • Brain is deep to the skull

  • Skin is superficial to muscles

1.7.4 Regional Terminology

  • Nasal β†’ nose

  • Oral β†’ mouth

  • Cervical β†’ neck

  • Acromial β†’ shoulder

  • Axillary β†’ armpit

  • Abdominal β†’ abdomen

  • Brachial β†’ arm

  • Antecubital β†’ front of elbow

  • Antebrachial β†’ forearm

  • Pelvic β†’ pelvis

1.7.5 Planes

  • The frontal (coronal) plane separates anterior and posterior portions

  • The transverse (horizontal) plane separates superior and inferior portions

1.7.6 Cavities

  • Cranial cavity β†’ dorsal cavity

  • Spinal cavity β†’ dorsal cavity

  • Thoracic cavity β†’ ventral cavity

  • Abdominopelvic cavity β†’ ventral cavity

  • Brain β†’ cranial cavity

  • Spinal cord β†’ vertebral cavity

1.8 Post‑Lab Activity 1.2 β€” Multiple Choice Answers

    1. Frontal plane
    1. Thoracic and abdominal cavities
    1. Midsagittal plane
    1. Mediastinum
    1. Umbilical region
    1. Endocrine system
    1. Skeletal system
    1. None of the above
    1. Visceral
    1. Lateral

πŸ“Œ End of Chapter 1