What muscle is a major spine flexor The name means straight muscle of the abdomen?
What muscle is a major spine flexor The name means straight muscle of the abdomen?
What muscle is a major spine flexor The name means straight muscle of the abdomen?
Anterior Trunk
| Question | Answer |
|---|---|
| A major spine flexor; the name means “straight muscle of the abdomen” | Rectus Abdominus |
| prime mover for shoulder flexion and adduction (back to body) | Pectoralis Major |
| prime mover for shoulder abduction (away from body) | Deltoid |
| forms the external lateral walls of the abdomen | external obliques |
What is the action of the muscle identified by the letter A?
What is the action of the muscle identified by letter A? It abducts and medially rotates the thigh and steadies the pelvis.
What muscle assumes major responsibility for forming the abdominal wall?
BIO201 – Final Review 2 – Q & A’s from Online Lessons & Labs – Muscle System
| Question | Answer |
|---|---|
| Prime mover for pulling the arm posteriorly | latissimus dorsi |
| Prime mover for shoulder flexion | Pectoralis major |
| Assume major responsibility for forming the abdominal girdle | External oblique, internal oblique, transversus abdominis |
What is the elbow extender?
Two muscles – the triceps brachii and anconeus – act as the extensors of the forearm. The rotation of the forearm is accomplished by two muscles that cross the elbow: the pronator teres and the supinator.
What muscle is used to show you’re happy?
Levator Anguli Oris
Levator Anguli Oris The happy muscle, making the corners of our mouth turn upwards into a smile.
What are the major head flexor muscles?
sternocleidomastoid muscles
Question: The major head flexors are the sternocleidomastoid muscles, with the help of the muscles attached to the hyoid bone.
Which muscle is a major spine flexor?
Major spinal flexors include the external oblique, internal oblique, and rectus abdominis muscles.
What is the major factor controlling how levers work?
Explanation: Lever is the simple machine that has ability to rotate on its own in accordance with point.It is based on the working that is carried out by the different position load,force and fulcrum factors. These factors decide the movement and location the lever tends to move and work.
Which muscle would be a major flexor of the trunk?
TRUNK LATERAL FLEXION All trunk flexors and extensors can produce lateral flexion when acting unilaterally. The major muscles involved are the rectus abdominis, external and internal obliques, erector spinae, semispinalis thoracis, latissimus dorsi, deep posterior spinal muscles, quadratus lumborum, and psoas.
Why do we have 3 elbow flexors?
The biceps flexes the elbow. It does this more efficiently when the forearm is pronated , because then it’s fully stretched when it starts its action. The biceps can also be a powerful supinator of the forearm, as we’ll see later. The last of the three elbow flexors is brachioradialis.
What is the major flexor of the elbow?
The brachialis muscle is the strongest flexor of the elbow in the absence of supination, as with supination and flexion, its mechanical momentum becomes more disadvantaged than the biceps brachialis muscle.
What is the most powerful forearm extensor?
Terms in this set (14)
- Triceps brachii. powerful forearm extensor; antagonist of forearm flexors ( brachialis and biceps brachii.
- Anconeus. abducts ulna during forearm pronation; extends elbow.
- Biceps brachii.
- Brachioradialis.
- Brachialis.
- Pronator teres.
- Flexor carpi radialis.
- Palmaris longus.
Which muscles are responsible for the real smile?
Each smile hinges on an anatomical feature known as the zygomaticus major, straps of facial muscle below the cheekbones that pull up the corners of the mouth.
What type of muscles make you smile?
The zygomaticus major is a muscle of the human body. It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly to allow one to smile.
Which joint is considered the most flexible joint in the body?
shoulder joint
The shoulder joint is the body’s most flexible joint: A group of four muscles holds the head of the upper arm bone in the relatively flat shoulder socket (glenoid).
What muscle allows you to bite a carrot?
Chapter 6 A&P test
| Question | Answer |
|---|---|
| Your “kisser” | Orbicularis oris |
| allows you to “bite” the carrot stick | masseter |
| tenses skin of the neck during shaving | platysma |
| a major spine flexor | rectus abdominis |
What is the most powerful muscle in the human body?
masseter
The strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars. The uterus sits in the lower pelvic region.
Which class of lever is the most common in the body?
third-class lever
In a third-class lever, the most common in the human body, force is applied between the resistance (weight) and the axis (fulcrum) (figure 1.23a).
What muscles flex the lumbar?
The primary muscles involved with producing lumbar flexion are the Rectus Abdominis, internal oblique, and external obliques. The nerves that innervate the Rectus Abdominis are the Intercostals (7-11) and Subcostal (T12).
What four muscles help the abdominal girdle?
Chapter 6 A&P test
| Question | Answer |
|---|---|
| a major spine flexor | rectus abdominis |
| prime mover for pulling the arm posteriorly | latissimus dorsi |
| elbow extender | triceps brachii |
| help form the abdominal girdle (four pairs of muscles) | 1. rectus abdominis 2. external oblique 3. internal oblique 4. transverse abdominis |
What is the prime mover of arm abduction?
The middle region of the deltoid muscle is the prime mover for arm abduction. The pectoralis major acts as an antagonist to the middle deltoid anteriorly, whilst the latissimus dorsi acts as the antagonist posteriorly.
What exercise would be best for the development of the abdominal muscles?
Bicycle crunches use all of the abdominal muscles, including the rectus abdominis — the front ab muscles that make up the visible six-pack. The captain’s chair stimulates both the abdominals and the obliques that line the sides of your abs.
What are the major core muscles?
Your core muscles are the muscles deep within the abdominals and back, attaching to the spine or pelvis. Some of these muscles include the transversus abdominis, the muscles of the pelvic floor, and the oblique muscles. Another muscle that is involved in moving the trunk is the multifidus.
How are the flexor muscles attached to the spine?
The flexor muscles are attached to the front of the spine and enable flexing, bending forward, lifting, and arching the lower back. The oblique muscles are attached to the sides of the spine and help rotate the spine and maintain proper posture. Watch Video: Understanding Different Types of Back Pain
Which is the prime mover for shoulder flexion?
Prime mover for shoulder flexion External/internal oblique Partly forms the abdominal girdle Transverse abdominus Partly forms the abdominal girdle Pectoralis minor Pulls the shoulder backward and downward Deltoid Prime mover of shoulder abduction
What are the names of the muscles in the lower back?
Extensor, Flexor and Oblique Muscles and Back Pain. These muscles include the large paired muscles in the lower back, called erector spinae, which help hold up the spine, and gluteal muscles. The flexor muscles are attached to the front of the spine and enable flexing, bending forward, lifting, and arching the lower back.
Are there more than one muscle in the lumbar spine?
These six major functional groups of the lumbar spine are not mutually exclusive. A muscle can be a member of more than one functional group. For example, the right external abdominal oblique can flex, right laterally flex, and left (contralaterally) rotate the trunk at the spinal joints.
How are flexor muscles attached to the spine?
Flexor muscles. Attached to the front of the spine, these muscles include the abdominal muscles. They allow us to flex, bend forward, lift and arch the lower back. When the abdominal muscles are weak, the muscles that allow us to bend at the hip get tighter, increasing the curve at the lower back. Oblique muscles.
Prime mover for shoulder flexion External/internal oblique Partly forms the abdominal girdle Transverse abdominus Partly forms the abdominal girdle Pectoralis minor Pulls the shoulder backward and downward Deltoid Prime mover of shoulder abduction
Extensor, Flexor and Oblique Muscles and Back Pain. These muscles include the large paired muscles in the lower back, called erector spinae, which help hold up the spine, and gluteal muscles. The flexor muscles are attached to the front of the spine and enable flexing, bending forward, lifting, and arching the lower back.
What are the muscles that support the spine?
Soft tissues around the spine also play a key role in the health of the back. A large, complex group of muscles work together to support the trunk and hold the body upright. They also allows the trunk to move, twist and bend in multiple directions. Three types of back muscles that help spinal function are the: Extensor muscles.