WINDSOR UNIVERSITY SCHOOL OF MEDICINE St.Kitts

1. DEPARTMENT OF ANATOMY WINDSOR UNIVERSITYSCHOOL OF MEDICINESt.Kitts Introduction to Clinically Oriented Anatomy Dr. SREEKANTH THOTA

2. Introduction to Clinically Oriented Anatomy • Anatomy is the study of the structure of the body. • Anatomy includes those structures that can be seen grossly (without the aid of magnification) and microscopically (with the aid of magnification). • Microscopic anatomy, also called 'histology', is the study of cells and tissues using a microscope.

3. How can gross anatomy be studied? • Anatomy can be studied following either a regional or a systemic approach. • Regional approach: each region of the body is studied separately and all aspects of that region are studied at the same time. • Systemic approach: each system of the body is studied and followed throughout the entire body. • Each of these approaches has benefits and deficiencies. The regional approach works very well if the anatomy course involves cadaver dissection.

4. Anatomical Position • The anatomical position is the standard reference position of the body used to describe the location of structures. • The body is in the anatomical position when standing upright with feet together, hands by the side and face looking forward. • The mouth is closed and the facial expression is neutral.

6. Anatomical Planes • Three major groups of planes pass through the body in the anatomical position. • 1. Coronal planes:oriented vertically and divide the body into anterior and posterior parts. • 2. Sagittal planes:oriented vertically, but are at right angles to the coronal planes and divide the body into right and left parts. • 3. Transverse, horizontal, or axial planesdivide the body into superior and inferior parts.

8. Supine position and Prone position • The supine position  is a position of the body: lying down with the face up. • Prone position is a position of the body lying face down.

9. Ipsilateral/Contralateral • Ipsilateralrefers to a part or parts on the same side of the body. • The illustration shows the ipsilateral shoulder and hip. • Contralateral describes a part or parts on the opposite sides of the body from each other. • The illustration shows, the contralateral hip and knee.

10. Terms of Relationship and Comparison 1.Anterior (ventral) and posterior (dorsal), medial and lateral, superior and inferior. 2. Proximal and distal, cranial and caudal, rostral. 3.Superficial and deep.

12. Terms of movement • These terms describe movements of the limbs and other parts of the body; the movements take place at joints, where two or more bones or cartilages articulate with one another.

13. Flexion and Extension

14. Abduction and Adduction

15. Pronation and Supination

16. Dorsiflexion and plantarflexionEversion and Inversion

17. Elevation and Depression

18. Protrusion and Retrusion

19. Basic Structures • 1. Skin 7. Lymphatic System • 2. Fascia 8. Nervous System a. superficial fascia b. Deep fascia • 3. Muscle • 4.Bone • 5. Joints • 6. Blood Vessels

20. Skin • The skin is divided into two parts: the superficial part, the epidermis, and the deep part, the dermis.

21. Fasciae • Superficial fascia, or subcutaneous tissue: Mixture of loose areolar and adipose tissue that unites the dermis of the skin to the underlying deep fascia

22. Deep fascia • Membranous layer of connective tissue that invests the muscles and other deep structures.

23. Muscle • Three types of muscle • 1. Skeletal Muscle • 2. Smooth • 3. Cardiac.

24. Structure of Skeletal Muscle • The attachment that moves the least is referred to as the origin, and the one that moves the most, the insertion.

25. Joints • A site where two or more bones come together, whether or not movement occurs between them, is called a joint. • 1. Fibrous Joints: bones are joined by fibrous tissue. • 2. Cartilaginous Joints: bones are united by a plate or bar of hyaline cartilage. • 3. Synovial Joints: Most common type of joint, provide free movement between the bones they join; they are joints of locomotion.

26. Fibrous Joint and Cartilaginous Joint

27. Synovial joints • The six major types of synovial joints are classified according to the shape of the articulating surfaces and/or the type of movement they permit. • 1. Plane joints 4. Condyloid joints • 2. Hinge joints 5. Ball and socket joints • 3. Pivot joints 6. Saddle joints

29. Lymphatic System • Lymph is the name given to tissue fluid once it has entered a lymphatic vessel. • 1. Lymphatic vessels • 2. Lymph node • 3. Lymphatic ducts

30. Lymphatic System

31. The thoracic duct and right lymphatic duct and their main tributaries.

32. Nervous System • Nervous tissue consists of two main cell types: neurons (nerve cells) and neuroglia (glial cells), which support the neurons.

33. The nervous system is divided Structurally into the central nervous system (CNS) and peripheral nervous system (PNS). Functionally into the somatic nervous system (SNS) and autonomic nervous system (ANS).

34. Cranial Nerves • There are 12 pairs of cranial nerves that leave the brain and pass through foramina in the skull. • All the nerves are distributed in the head and neck except the Xth (vagus), which also supplies structures in the thorax and abdomen.

36. Spinal Nerves • A total of 31 pairs of spinal nerves leave the spinal cord and pass through intervertebral foramina in the vertebral column. • 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal.

37. Spinal nerve(anterior and posterior rami) • On emerging from the foramen, the spinal nerve divides into a large anterior ramus and a smaller posterior ramus. • Posterior ramuspasses posteriorly around the vertebral column to supply the muscles and skin of the back. • Anterior ramuscontinues anteriorly to supply the muscles and skin over the anterolateral body wall and all the muscles and skin of the limbs.

38. Spinal nerve

39. Plexuses • At the root of the limbs, the anterior rami join one another to form complicated nerve plexuses. • The cervical and brachial plexuses are found at the root of the upper limbs, and the lumbar and sacral plexuses are found at the root of the lower limbs.

40. Autonomic Nervous System • 2 divisions: • Sympathetic • “Fight or flight” • “E” division • Exercise, excitement, emergency, and embarrassment • Parasympathetic • “Rest and digest” • “D” division • Digestion, defecation, and diuresis