Anterior Torso Muscles Illustration

anterior torso muscles. These intricate structures play a crucial role in our daily activities, from breathing to movement. Buckle up as we explore their anatomy and functions.

## Anterior Trunk Muscles: Guardians of the Front

The anterior trunk muscles reside on the front and sides of the torso, attaching to the bony framework of the thoracic cage and pelvis. They form a robust network that supports and moves the upper body. Let’s break down these muscles into key groups:

### 1. Muscles of the Thoracic Cage

#### a. Pectoralis Major:
– The pectoralis major is a powerful muscle that spans the chest. It originates from the clavicle, sternum, and upper ribs, and inserts onto the humerus.
– Its primary functions include flexing and adducting the arm, making it essential for movements like hugging, pushing, and lifting.

#### b. Pectoralis Minor:
– The pectoralis minor lies beneath the pectoralis major. It originates from the third to fifth ribs and attaches to the scapula.
– This muscle assists in stabilizing the scapula during arm movements.

#### c. Serratus Anterior:
– The serratus anterior runs along the lateral rib cage. It originates from the upper ribs and inserts onto the scapula.
– Its unique arrangement resembles serrated teeth, hence the name. It plays a crucial role in protracting and rotating the scapula, aiding movements like reaching forward and lifting objects.

#### d. Subclavius:
– The subclavius muscle lies beneath the clavicle. It connects the clavicle to the first rib.
– Although small, it stabilizes the clavicle and assists in depressing the shoulder.

#### e. Intercostal Muscles:
– The intercostal muscles are found between adjacent ribs. They come in three layers: external, internal, and innermost.
– These muscles facilitate rib movement during breathing. The external intercostals elevate the ribs during inhalation, while the internal and innermost intercostals aid exhalation.

#### f. Subcostals:
– The subcostals are deep muscles that run parallel to the ribs. They assist in rib depression during exhalation.

#### g. Transversus Thoracis:
– The transversus thoracis lies deep within the chest. It originates from the sternum and inserts onto the ribs.
– This muscle contributes to rib stabilization and assists in exhalation.

#### h. Diaphragm:
– The diaphragm is a large, dome-shaped muscle that separates the thoracic and abdominal cavities.
– It plays a pivotal role in breathing, contracting during inhalation and relaxing during exhalation.

### 2. Anterolateral Abdominal Wall Muscles

#### a. Rectus Abdominis:
– The rectus abdominis, commonly known as the “six-pack,” runs vertically along the midline of the abdomen.
– It flexes the trunk, aids in sitting up, and provides stability during movements.

#### b. External Abdominal Oblique:
– The external abdominal oblique forms the outermost layer of the abdominal wall.
– It assists in trunk rotation, lateral flexion, and compressing the abdomen.

#### c. Internal Abdominal Oblique:
– The internal abdominal oblique lies beneath the external oblique.
– It performs similar functions, including trunk rotation and lateral flexion.

#### d. Transversus Abdominis:
– The transversus abdominis is the deepest abdominal muscle. It runs horizontally across the abdomen.
– Its primary role is abdominal compression, crucial for maintaining posture and supporting the spine.

#### e. Pyramidalis:
– The pyramidalis is a small triangular muscle located just above the pubic bone.
– While its function isn’t fully understood, it likely contributes to tension in the linea alba (a fibrous band in the midline of the abdomen).

#### f. Quadratus Lumborum:
– The quadratus lumborum lies deep in the lower back. It connects the pelvis to the lower ribs.
– This muscle assists in lateral flexion of the trunk and helps maintain an upright posture.

## Conclusion

These anterior torso muscles are the unsung heroes of our daily movements. Whether we’re lifting groceries, taking a deep breath, or simply sitting up, they work tirelessly to keep us going. So next time you stretch or twist, remember

Anterior Torso Muscles Illustration Diagram - Anterior Torso Muscles Illustration Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Anterior Torso Muscles Illustration with parts and labels. Best diagram to help learn about health, human body and medicine.

Anterior Torso Muscles Illustration

Anterior Lobe Of The Pituitary Gland Image

[edit on Wikidata] A major organ of the endocrine system, the anterior pituitary (also called the adenohypophysis or pars anterior), is the glandular, anterior lobe that together with the posterior lobe (posterior pituitary, or the neurohypophysis) makes up the pituitary gland (hypophysis).
The anterior pituitary lobe is responsible for the synthesis of most pituitary hormones. It consists of the pars distalis, a structure composed of strings of specialized cells that secrete hormones associated with growth and development (trophic hormones).
The anterior pituitary lobe is responsible for the synthesis of most pituitary hormones. It consists of the pars distalis, a structure composed of strings of specialized cells that secrete hormones associated with growth and development (trophic hormones).

Anterior Lobe Of The Pituitary Gland Image Diagram - Anterior Lobe Of The Pituitary Gland Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Anterior Lobe Of The Pituitary Gland Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Anterior Lobe Of The Pituitary Gland Image

Anterior Muscles Image

List of Major Anterior Muscles. 1 Adductor longus. A muscle of the medial thigh that originates on the pubis. It inserts onto the linea aspera of the femur. It adducts, flexes, and … 2 Biceps brachii. 3 Brachioradialis. 4 Coracobrachialis. 5 Deltoid. More items
There are four muscles in the anterior compartment of the leg; tibialis anterior, extensor digitorum longus, extensor hallucis longus and fibularis tertius. Collectively, they act to dorsiflex and invert the foot at the ankle joint.
There are four muscles in the anterior compartment of the leg; tibialis anterior, extensor digitorum longus, extensor hallucis longus and fibularis tertius. Collectively, they act to dorsiflex and invert the foot at the ankle joint.

Anterior Muscles Image Diagram - Anterior Muscles Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Anterior Muscles Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Anterior Muscles Image

Human Skeleton Anterior View Image

Donald Brothwell’s “Digging up Bones” has a broad coverage of the archaeological and anthropological aspects of excavating and interpreting human skeletal materials and is an excellent introductory text. More detailed books on human skeletal anatomy, with an anthropological orientation, are provided by Shipman et al. (1985) and White (1991).
The mandible The tooth bearing mandible is the largest and strongest bone of the facial skeleton and preferentially preserves in archaeological and palaeontological deposits. The horizontal body of the mandible is curved and joined to two relatively vertical rami.
The mandible The tooth bearing mandible is the largest and strongest bone of the facial skeleton and preferentially preserves in archaeological and palaeontological deposits. The horizontal body of the mandible is curved and joined to two relatively vertical rami.

Human Skeleton Anterior View Image Diagram - Human Skeleton Anterior View Image Chart - Human anatomy diagrams and charts explained. This anatomy system diagram depicts Human Skeleton Anterior View Image with parts and labels. Best diagram to help learn about health, human body and medicine.

Human Skeleton Anterior View Image