Lecture1 - Introduction

Lecture1 - Introduction - Body positioning Superior: head...

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Body positioning Superior : head end of the body Inferior : feet end of the body o These are joined by the superior-inferior axis o These are divided by the Transverse plane Anterior : front of the body (syn. Ventral ) Posterior : back of the body (syn. Dorsal ) o These are joined by the anteroposterior axis o These are divided by the frontal plane Left/Right Lateral : left or right of the front of the body o These are divided by the sagittal plane Medial : center of the body Proximal : point part of an appendage closer to the trunk (shoulder, thigh) Distal : part of an appendage further away from the trunk Major Body Cavities Two main cavities, ventral and dorsal 1. Ventral : contains organs in the chest and abdomen. a. Thoracic Cavity : contains lungs, heart, lower esophagus, thymus gland, and other organs of the cardiovascular, respiratory, and lymphatic systems. i. Right Pleural Cavity : right lung ii. Left Pleural Cavity : left lung iii. Mediastinum : space between the Pleural Cavities containing the trachea, esophagus, thymus, heart and vessels connected to the heart. 1. Pericardial Cavity : area surrounding the heart b. Abdominopelvic Cavity: divided into superior Abdominal and inferior Pelvic Cavities
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i. Abdominal Cavity : Digestive organs and glands, including the liver, gallbladder, spleen, kidneys, pancreas, stomach, small intestine, majority of large intestine. ii. Pelvic Cavity : surrounded by the pelvis, contains the inferior portion of the large intestine, bladder, uterine tubes, and reproductive organs. 2. Dorsal a. Cranial Cavity : fluid filled space inside the cranium containing the brain b. Spinal Cavity : space that encloses the spinal cord extending from the cranial cavity to the base of the spine. Body Organization A Cell is the basic biological and structural unit of the body Tissues are groups of similar cells that perform a common function. Organs are groups of tissues that accomplish a particular function Organ systems are groups of organs that assist each other towards a common function o Cardiovascular system o Cardiopulmonary system o Neuroendocrine system o Gastrointestinal system Major Organ Systems Integument System : skin, hair, nails, sweat glands, oil glands, sensory receptors Skeletal System : internal supporting framework of the body (20% of body weight, 206 bones) Also contains cartilage and ligaments, strong strips of connective tissue that hold bones together at joints. Muscular System : system, muscles, that allows the body to move, largely controlled by the nervous system. Nervous System : Sensory system that detects and responds to stimuli, contains brain, spinal cord, and nerves. Circulatory
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This note was uploaded on 04/06/2008 for the course BMVS 4064 taught by Professor Dr.lee during the Spring '08 term at Virginia Tech.

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Lecture1 - Introduction - Body positioning Superior: head...

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