Anatomy of Chest and Abdominal Muscles

Anatomy of Chest Muscles

Pectoralis Major

The pectoralis major muscle can act as an accessory in respiration. It is located between the scapula and the chest wall. Origin: lateral surface of the first eight ribs; insertion, regardless of the scapula spine. Action: rotation of the scapula and inspiratori.

External Intercostal Muscles

Each of these 11 pairs occupy the intercostal space, the ribs superior to inferior, from the Tuber of the rib to the cost-chondral junction.

Internal Intercostal Muscles

The

Read More

Ankle Joint Biomechanics: A Comprehensive Analysis

Complex Periastragalino

a. Tibioastragalina – Subastragalina – Mediotarsiana

A. Tibioastragalina (Trocleartrosis)

Astragalus: Trochlea astragalina int and ext lateral and veneers, unique art surface covered by hyaline cartilg

Distal Epiphysis of the Tibia and Fibula

Lig of tobillo -> int and ext lateral lig

Ext: Investment and resist the rotation int -> Lig peroneal astragalino ant (tobillo plans stabilized A / P 10 20 ° plantar flex) fibular lig calcaneo (stabilized Varo of joints) and fibular

Read More

Back and Chest Muscles: Anatomy, Function, and Innervation

Appendicular and dorso-costal muscles relate to the ribs and deeper back muscles. Each has a different innervation: appendicular back muscles are innervated through the brachial plexus, dorsal-rib muscles through the intercostal nerves, and intrinsic back muscles through the posterior branches of spinal nerves.

Appendicular Back Muscles

The most superficial is the trapezius muscle, which is triangular and originates from the external occipital protuberance in the nuchal ligament (supraspinous ligament

Read More

Pituitary Gland: Structure, Hormones, and Function

Pituitary Gland (पीयूषग्रन्थि)

The pituitary, or hypophysis cerebri, is a small, pea-sized gland that plays a major role in regulating vital body functions.

It is also called the “master gland” because it controls the activity of other hormone-secreting glands. The gland lies in the hypophyseal, or pituitary fossa, which is roofed by the diaphragma sellae.

The weight of the pituitary gland is about 500mg.

Relations

Superiorly, the pituitary gland is related to:

  • Diaphragma sellae
Read More

Skin and Skeletal System: Structure, Function, and Bone Cells

Skin Structure and Function

Skin: There are two types of skin:

  • Thick skin: Found on the palms of the hands, fingertips, and soles of the feet.
  • Thin skin: Covers most of the body and contains hair follicles, sebaceous glands, and arrector pili muscles.

Functions of the Skin

The skin provides:

  • Protection: From pathogens and the environment.
  • Sensation: Contains nerve endings for touch, pressure, temperature, and pain.
  • Body Temperature Regulation: Through sweat production and blood vessel dilation/constriction.
Read More

Endocrine System: Diseases and Oral Manifestations

Endocrine System

The pituitary gland is an organ located in the sella turcica of the skull that governs the entire endocrine system. It has two distinct anatomical and physiological regions:

  • Anterior lobe (adenohypophysis): Secretes FSH (follicle-stimulating hormone), LH (luteinizing hormone), TSH (thyrotropin or thyroid-stimulating hormone), ACTH (adrenocorticotropic hormone that controls the adrenal glands), GH (growth hormone), and prolactin (stimulates mammary glands and promotes milk production)
Read More