papillary region

Examples of papillary region in the following topics:

• Blood Supply to the Epidermis

  • The dermis is structurally divided into two areas: a superficial area adjacent to the epidermis, called the papillary region, and a deep, thicker area known as the reticular region.
  • The papillary region is composed of loose areolar connective tissue.
  • The reticular region lies under the papillary region and is usually much thicker.
  • Blood vessels that supply the capillaries of the papillary region run through the reticular region.
  • Blood vessels that supply the capillaries of the papillary region are seen running through the reticular layer.

• Structure of the Skin: Dermis

  • The dermis consists of a papillary and a reticular layer that serve to protect and cushion the body from stress and strain.
  • They are the papillary layer (the upper layer) and the reticular layer (the lower layer).
  • The papillary layer provides the layer above it, the epidermis, with nutrients to produce skin cells called keratinocytes.

• Metabolic Functions

  • The integumentary system distinguishes, separates, and protects the organism from its surroundings, but also plays a key metabolic function, as the major region for vitamin D production.
  • Beneath this, the dermis comprises two sections, the papillary and reticular layers, and contains connective tissues, vessels, glands, follicles, hair roots, sensory nerve endings, and muscular tissue.

• Operation of Atrioventricular Valves

  • The subvalvular apparatus includes the chordae tendineae and the papillary muscles.
  • The chordae tendineae are inelastic and attached at one end to the papillary muscles and at the other end to the valve cusps.
  • Papillary muscles are finger-like projections from the wall of the ventricle that anchor the chordae tendineae.
  • The tricuspid valve functions similarly to the bicuspid valve except that three chordae tendineae connect the cusps of the valve to three papillary muscles, rather than the pair that connects the bicuspid valve.

• Burns

  • Second degree burns extend into the superficial papillary dermis .

• Hemidesmosomes

  • Beneath the lamina densa, loop-structured, cross-banded anchoring fibrils extend more than 300 nm beneath the basement membrane within the papillary dermis.

• Regional Terms and Axes

  • The Appendicular Region makes up the parts of the human body that connect to the axial region.
  • These are the two basic categories of regional terms; however, many other terms are used to describe smaller regions within the axial and appendicular regions.
  • For example, the brachial region consists of the arm as a part of the appendicular region, while the abdominal region consists of the abdomen as a smaller part of the axial region.
  • The abdominal region is subdivided into even smaller regions based on different functions of groups of organs and tissues in that region.
  • Many types of axes can give regional direction.

• Abdominopelvic Regions

  • The most common divisions for the abdominopelvic region are the four quadrants and nine regions.
  • The abdominopelvic region can be divided into four quadrants.
  • Clinicians use these regions to determine the organs and tissues that may be causing pain or discomfort in that region.
  • It is also commonly referred to as the right inguinal region.
  • It is also commonly called the left inguinal region.

• Regional Vertebral Characteristics

  • Vertebrae are given an alphanumeric descriptor, with the initial letter derived from the region they are located in followed by a digit that increases moving down the region.
  • The main function of the cervical region is to facilitate attachment of the skull to the spine, protect the spinal cord over the exposed neck and shoulder region, and support the body.
  • The twelve thoracic vertebrae are located inferiorly to the cervical region.
  • During childhood the five vertebrae of the sacral region are distinct.
  • The final region of the spine is the coccyx, or tailbone.

• General Characteristics of the Spine

  • Vertebrae are given an alphanumeric descriptor, with the initial letter derived from the region they are located in followed by a digit; the digit increases moving down the region.
  • Viewed laterally the vertebral column presents several curves that correspond to the different regions of the column.
  • These are called the cervical, thoracic, lumbar, and pelvic regions.
  • The cervical curve covers the region between vertebrae C1 and T2, it is the least marked of all the spinal curves.
  • The thoracic curve covers the region between vertebrae T2 and T12.