Chapter 1: Anatomical Terminology Flashcards
Anatomy
scientific discipline concerned with organization and structure of the human body.
Greek roots to “Cut up”
Cytology
study of cells and individual cellular structures
Macroscopic (Gross) anatomy
Study of structures visible with an unaided eye
3 types:
A) Surface anatomy
B) Systemic anatomy
C) Regional anatomy
Surface anatomy
study of general form and superficial markings of the body
Systemic anatomy
Study of the 11 specific body systems
Regional anatomy
study of specific body regions, including physical and functional relationships between structures in that region
Microscopic anatomy
study of structures not visible without magnification
2 types:
A) Cytology
B) Histology
Histology
study of the structure of groups of cells and the significance of their interactions. Groups of similar cells having a collaborative function are called tissues.
What are 2 types of specific anatomical study?
1) Developmental anatomy
2) Medical/radiological
Developmental anatomy
study of structural changes taking place in an individual from fertilization to mature adult. Embryology is a specific branch of this.
Medical/Radiological field of developmental anatomy
study of changes in anatomy characterizing disease and/or injury. Study of anatomical features visible with radiographic technology for purposes of clinical diagnosis.
what are the 3 Basic General body divisions?
1) Body Wall
2) Body Cavities
3) Organs
Body wall
consists of structures forming the body’s framework, supporting and enclosing vital organs.
Comprised of the skin, skeleton, and muscle.
The head, arms, and legs are considered as specialized extensions of the body wall.
Body cavities
the large , internal body spaces filled with vital organs.
they function to protect and house internal organs while still allowing them freedom of movement
What is the largest body cavity?
Ventral (abdominal) cavity.
This cavity is divided into the Thoracic (chest) cavity, and the abdominopelvic cavity
What does the thoracic (chest) cavity house?
heart and lungs
What does the abdominopelvic cavity house?
abdominal and pelvic organs (stomach, liver, intestines, bladder, reproductive structures, etc…)
Organs
discrete structures within body capable of performing specific functions
What are the 11 body systems?
Integumentary
Skeletal
Muscular
Nervous
Endocrine
Cardiovascular
Lymphatic
Respiratory
Digestive
Urinary
Reproductive
Pneuomonic device:
MR L DICE RUNS
Integumentary System
Forms outermost part of body wall (skin).
Components: epidermis, dermis, accessory structures (hair, nails, glands, sensory endings).
Functions: thermoregulation (temperature control), sensation, protection
Skeletal system
part of the body wall
Components: bones, ligaments, cartilage, connective tissue.
Functions: support, protection, blood formation, mineral storage.
Muscular system
part of the body wall
Components: skeletal muscles and tendons.
Functions: support, motility, heat production
Nervous system
Components: Central (brain and spinal cord) and peripheral (motor and sensory nerves) nervous systems.
Functions: controls body systems, perceiving internal and external environments.
Endocrine system
components: glandular tissue throughout body.
Functions: coordinates and controls body systems using hormones.
Cardiovascular system
components: heart and blood vessels.
Functions: internal transport of dissolved materials like nutrients, gases, and wastes.
Lymphatic system
vessels and immune cells throughout body.
components: lymph vessels, nodes, organs.
Functions: internal defense, removal of cellular debris, and blood volume maintenence.
Respiratory system
structures involved in exchange of gases.
Components: larynx, trachea, bronchi, lungs
Function: exchange of gases (O2 and CO2) between body and environment.
Digestive system
primarily within abdominal cavity.
Components: oral cavity, esophagus, stomach, and intestine.
Functions: process food, absorb nutrients, minerals, vitamins, water, and waste elimination.
Urinary system
primarily within pelvic cavity.
components: kidneys, ureters, urinary bladder, urethra.
Functions: regulation of blood chemistry via elimination of excess water, salts, and waste products
Reproductive system
primarily within pelvic cavity.
components: sex organs (ovaries, testes) and support structures.
Functions: production of sex cells and sex hormones
Standard anatomical position (SAP)
standing erect
upper limbs at one’s sides
lower limbs together
face, palms, feet directed forward
Superior
above/ at higher level.
In humans- towards head.
Inferior
Below/ at lower level
in humans- towards feet
Cranial
toward the head.
(In humans, the term superior is more common)
Caudal
Toward the tail
(in humans, the term inferior is more common)
anterior (Ventral)
near the front of the body or structure (belly side)
Posterior (Dorsal)
near the back of the body or structure.
Medial
Toward the midline (longitudinal axis) of body or structure
Lateral
away from the midline (longitudinal axis) of body or structure
Ipsilateral
on the same side of the body
Contralateral
on the opposite side of the body
Proximal
near to attachment point (trunk). used to describe relative distance down a limb
Distal
far from point of attachment (trunk). used to describe relative distance down a limb
Superficial
toward surface of body/organ
Intermediate
between a superficial structure and a deep structure