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Why do you need both biceps and triceps to move the lower arm up and down at the elbow?
Because muscles can not push, they can only pull (contract). So while your biceps contract to pull the arm up into a flexed position; the triceps are necessary to pull the arm back down into an extended position. Skeletal muscles or groups of skeletal muscles must work in pairs. These pairs are called "antagonistic" muscles; while one group is contracting, the other group is relaxing.
You can easily feel this action in your arm. With your right arm extended, place you left hand on your right biceps. Flex your arm (as if to make a big muscle) and you will feel the biceps brachii tighten and bulge somewhat; we are familiar with this. Now, place your left hand on your triceps and straighten the right arm completely (extra straight) and you should be able to feel the triceps brachii tighten. Although aided by gravity, the triceps MUST contract to straighten the arm.
What else can I help you with?
What is the difference between biceps and triceps in terms of their function and location in the human body?
The biceps and triceps are both muscles in the human arm. The biceps are located on the front of the upper arm and are responsible for bending the arm at the elbow. The triceps are located on the back of the upper arm and are responsible for straightening the arm at the elbow.
What's the difference between biceps and triceps in terms of their function and location in the human body?
The biceps and triceps are both muscles in the human arm, but they have different functions and locations. The biceps are located on the front of the upper arm and are responsible for bending the arm at the elbow. The triceps are located on the back of the upper arm and are responsible for straightening the arm at the elbow.
Biceps brachii and triceps brachii how do they work together?
The biceps and triceps are used to bend and extend the elbow. When your biceps contract it bends the elbow and when the triceps contract it extends the elbow. Also, when the biceps contracts, the triceps relaxes - and vice versa.
What is the difference between biceps and triceps in terms of their function and anatomy?
The biceps and triceps are both muscles in the arm, but they have different functions and structures. The biceps are located on the front of the upper arm and are responsible for bending the arm at the elbow. The triceps are located on the back of the upper arm and are responsible for straightening the arm at the elbow. Additionally, the biceps have two heads (long head and short head) while the triceps have three heads (long head, lateral head, and medial head).
Do you use both the bicep and the tricep to straighten the arm?
No. Try and feel. Only triceps is contracted, biceps bend the arm over the elbow joint.
What does the same job and similar in size and shape in the body?
The biceps and triceps muscles are similar in size and shape in the body. They both function to move the arm at the elbow joint, with the biceps being responsible for flexion and the triceps for extension.
What is the difference between triceps and biceps in terms of their function and anatomy?
The triceps and biceps are both muscles in the arm, but they have different functions and structures. The triceps are located on the back of the upper arm and are responsible for extending the arm, while the biceps are located on the front of the upper arm and are responsible for flexing the arm. In terms of anatomy, the triceps have three heads or sections, while the biceps have two heads.
How many biceps do you have?
1 of each on each arm. Triceps are in the back of the upper arm while the Biceps are in the front. Both of which run from your shoulder to elbow.
What is an action of an antagonist?
A bad guy if you are talking about human characters in a story. But if you are talking about muscles, it is the one that acts to oppose the action of the prime mover, or agonist. For example: The biceps and triceps have an agonsit/antagonist relationship. When you flex your elbow (pretend you are Arnold Schwarzenegger and you want to 'bulge you biceps'). When you do that your triceps relaxes to allow the biceps to contract. But, in actuality, both are contracting, only the biceps are getting shorter and the triceps are getting longer. In other words, if you did not have the triceps to control and mitigate the movement of the biceps, you'd end up punching yourself in the face because there was no way to control the biceps shortening and flexing the elbow until you KO'd yourself. In other words, the agonist, or prime mover is the gas pedal and the antagonist is like the brakes. You need them both to control movement in the body.
What is the term for the muscle that bends and flexes the elbow joint?
Flexion (same as bending) at the elbow joint (between the humerus and the radius and ulna) is mainly achieved by the Brachialis Muscle. This is not the answer most would expect as everyone knows the Biceps Brachii (Biceps of the arm) are what flexes this joint. In fact the biceps does both supination and flexion of the elbow because its insertion is on the radius. Only when the forearm is supinated, the biceps is able to assist the deeper and more powerful brachialis muscle with the flexion of the elbow.
What is the job for the triceps?
It's usually used when you push or lift an object. According to the movement of the arm, when you are exercising or working, you may use the biceps, the triceps, or both.
What muscle flexes the elbow and attaches the the ulna?
The triceps and the brachialis both attach to the ulna.
