Week 1 - Introduction to Anatomy and Physiology Flashcards
How do organs differ from tissues?
They differ in levels of heirarchy. An organ is an arrangement of tissues to perform a certain function.
Connective tissue
Provides structure, support, defence, transport and building properties.
Epithelial tissue
Function is to protect, secrete, absorb and sense. Lines cavities, and covers surfaces.
Nerve tissue
Made of neurons, allows communication between brain and body.
Muscle tissue
Creates movement inside and outside of body, posture, produces heat by contraction and relaxation. Can be smooth, skeletal or cardiac.
Overall function of body cavities
To protect delicate organs, allow organs to change shape and size, and create a pleasant environment for organs.
Dorsal body cavity
Consists of cranial and spinal cavities
Cranial cavity
Formed by the skull, contains the brain
Spinal cavity
Formed by the vertebrae, contains the spinal cord.
Ventral body cavity (viscera)
Consists of thoracic and abdominopelvic cavities. The thoracic cavity is superior to the abdominopelvic cavity.
Thoracic cavity
Divided into pleural and pericardial cavities.
Pleural cavity
Contains lungs
Pericardial cavity
Contains the heart
Abdominopelvic cavity
Divided into the abdominal and pelvic cavities
Abdominal cavity
Consists of the stomach, liver, spleen, kidneys, small intestine and large intestine