Abdomen And Chest Muscles

1. What is the muscle that originates from the ribs and inserts into the Linea Alba? What are its functions?

Internal Oblique. O: Thoracolumbar Fascia I: Linea Alba F: flex, rotate trunk, compress abdomen.

Rectus Abdominis. O: Pubic symphysis, pubic crest I: Xiphoid process, costal cartilage of ribs F: flex trunk, compress abdomen.

Transversus Abdominis. O: Inguinal ligament, iliac crest, cartilages of lower ribs I: Linea Alba, pubic crest F: compress abdomen, stabilize trunk.

External Oblique
O: Ribs
I: Linea Alba
F: flex, rotate trunk, compress abdomen

The correct answer is External Oblique as it fits the description provided in the question. External Oblique originates from the ribs and inserts into the Linea Alba. Its functions include flexing, rotating the trunk, and compressing the abdomen. The three incorrect answers provided have different origins, insertions, and functions compared to the External Oblique, making them incorrect choices.

Explanation

The correct answer is External Oblique as it fits the description provided in the question. External Oblique originates from the ribs and inserts into the Linea Alba. Its functions include flexing, rotating the trunk, and compressing the abdomen. The three incorrect answers provided have different origins, insertions, and functions compared to the External Oblique, making them incorrect choices.

2. What is the name of this muscle?

Trapezius

Rectus Femoris

Internal Oblique
O:lumbar fascia
I:linear alba
F: Flex, rotate trunk; compress abdomen

Biceps Brachii

The correct name of this muscle is Internal Oblique, based on its origin and insertion points and function in flexing, rotating the trunk, and compressing the abdomen.

Explanation

The correct name of this muscle is Internal Oblique, based on its origin and insertion points and function in flexing, rotating the trunk, and compressing the abdomen.

3. What is the origin and insertion of the Transversus Abdominus muscle and what is its function?

Rectus AbdominisO: pubic crest I: xiphoid process F: flex spine, compress abdomen.

External ObliqueO: lower 8 ribs I: iliac crest, linea alba F: flex spine, rotate trunk, compress abdomen.

Serratus AnteriorO: upper 8 or 9 ribs I: vertebral border of scapula F: protracts scapula, rotates scapula.

Transversus Abdominus
O: lumbar fascia and ribs
I:linea alba
F: compress abdomen, rotate trunk

The correct answer describes the origin, insertion, and function of the Transversus Abdominus muscle. The incorrect answers provide information on other muscles, their origins, insertions, and functions to test the understanding of different muscles in the body.

Explanation

The correct answer describes the origin, insertion, and function of the Transversus Abdominus muscle. The incorrect answers provide information on other muscles, their origins, insertions, and functions to test the understanding of different muscles in the body.

4. What is this muscle? What is its origin and insertion? Function?

DeltoidO: clavicle, acromion, spine of scapulaI: deltoid tuberosity of humerusF: arm abduction

Serratus anteriorO: ribsI: scapulaF: protraction of scapula, aid in overhead movements

Gluteus maximusO: ilium, sacrum, coccyxI: femurF: hip extension, thigh external rotation

Rectus abdominusO: pubis I: ribsF: flex trunk, compress abdomen

Rectus abdominus is a muscle responsible for flexing the trunk and compressing the abdomen. Its origin is the pubis and its insertion is the ribs. The incorrect answers provided are for different muscles with their origins, insertions, and functions.

Explanation

Rectus abdominus is a muscle responsible for flexing the trunk and compressing the abdomen. Its origin is the pubis and its insertion is the ribs. The incorrect answers provided are for different muscles with their origins, insertions, and functions.

5. What is the origin, insertion, and function of the external intercostals muscle?

O: scapula, I: humerus, F: flex the elbow (biceps brachii)

O: sternum, I: clavicle, F: move the shoulder (deltoid)

External intercostalsO: ribs I: ribsF: elevate ribs, expand thorax(inspire)

O: ilium, I: femur, F: extend the knee (quadriceps femoris)

The external intercostals muscle is responsible for elevating the ribs and expanding the thorax during inspiration by originating and inserting on the ribs. The incorrect answers provide origins, insertions, and functions of different muscles to test proper understanding of anatomy.

Explanation

The external intercostals muscle is responsible for elevating the ribs and expanding the thorax during inspiration by originating and inserting on the ribs. The incorrect answers provide origins, insertions, and functions of different muscles to test proper understanding of anatomy.

6. What is the origin and insertion of the internal intercostal muscle and what is its function?

External oblique; O: ribs, I: linea alba; Function: flexes and rotates trunk

Serratus anterior; O: ribs, I: scapula; Function: protracts and stabilizes scapula

Internal intercostalsO: ribs I: ribsF: depress ribs, contract thorax(expire)

Deltoid; O: clavicle, scapula, and spine of scapula; I: deltoid tuberosity of humerus; Function: abducts arm

The internal intercostal muscle is responsible for depressing the ribs and contracting the thorax during expiration. Its origin and insertion are on the ribs.

Explanation

The internal intercostal muscle is responsible for depressing the ribs and contracting the thorax during expiration. Its origin and insertion are on the ribs.

7. What is the muscle responsible for expanding the thorax during inspiration?

Biceps brachii

DiaphragmO: ribs, sternum, vertebrae I: central tendonF: expandthorax (inspire)

Gluteus maximus

Rectus abdominis

The diaphragm is a dome-shaped muscle located at the base of the thoracic cavity. It plays a crucial role in respiration by expanding the thorax during inspiration.

Explanation

The diaphragm is a dome-shaped muscle located at the base of the thoracic cavity. It plays a crucial role in respiration by expanding the thorax during inspiration.