The muscles of the back can be arranged into 3 categories based on their location: superficial back muscles, intermediate back muscles and intrinsic back muscles. The intrinsic muscles are named as such because their embryological development begins in the back, oppose to the superficial and intermediate back muscles which develop elsewhere and ...

The muscles of the back can be classified as either deep, intermediate and superficial. Each of these 3 classes have distinct roles in support, movement and/or aiding in specialised functions such as in inspiration/expiration.

Nov 2, 2024 · The superficial back muscles are situated underneath the skin and superficial fascia. They originate from the vertebral column and attach to the bones of the shoulder – the clavicle, scapula and humerus. All these muscles are …

Sep 5, 2024 · The superficial and intermediate muscles do not develop in the back, and are classified as extrinsic muscles. This article is about the anatomy of the deep (intrinsic) back muscles – their attachments, innervations and functions.

Jan 5, 2023 · The superficial and intermediate muscles do not develop in the back, and are classified as extrinsic muscles. This article is about the anatomy of the intermediate back muscles – their attachments, innervations and functions.

Feb 10, 2025 · There are four muscles located in the root of the penis: Bulbospongiosus (x2) – associated with the bulb of the penis. It contracts to empty the spongy urethra of any residual semen and urine.

The back is the posterior region of the body that extends from the neck to the superior border of the pelvis. The back contains the vertebral column and spinal cord, as well as the broad muscles that move the upper limbs and maintain posture.

The muscles of the neck are present in four main groups. The suboccipital muscles act to rotate the head and extend the neck. Rectus capitis posterior major and Rectus capitis posterior minor attach the inferior nuchal line of the occiput to the C2 and C1 vertebrae respectively.

The phrenic nerve is crucial in its role innervating the diaphragm while other branches of the plexus provide sensation and supply the muscles of the neck. Some of these muscles are involved in positioning the head while others are responsible for manipulating the …

Sep 6, 2024 · There are three muscles that lie in the pectoral region and exert a force on the upper limb. They are the pectoralis major, pectoralis minor, and the serratus anterior. In this article, we shall learn about the anatomy of the muscles of the anterior chest.