8. Pectoral region and breast

Optional Reading Clinically Oriented Anatomy, 8th ed., Overview of thorax, Pectoral and scapular region, Breasts. Pectoral region The pectoral region is located in the anterior thorax on each side of the sternum, between the clavicle and axilla (armpit). It links the upper limb to the trunk and supports the breast. Figure 8.1 Muscles of pectoral […]

3. Introduction to the nervous system

Divisions of the nervous system Anatomic subdivisions: Central nervous system (CNS) Read More Brain and spinal cord. Peripheral nervous system (PNS) Read More Nerves and ganglia. Functional subdivisions of the nervous system are classified not on topography, but according to the organs and tissues they supply: Somatic nervous system Read More Supplies structures that we […]

Week 3 of human development

Two important events occur during Week 3: The process of GASTRULATION, which forms the “germ” layers of the embryo Differentiation of the MESODERM (one of the germ layers) Note Development of the neural tube (future central nervous system) begins in Week 3, but carries over into Week 4. Gastrulation Gastrulation is the process of converting […]