Why does the contraction of one head of biceps femoris flex the knee and extends the hip while the other head can only flex the knee?

Q: Why do you suppose there are more and larger muscles involved in flexion of the fingers and hand…

A: Flexion: It is a movement in which the angle between two body parts decrease. Extention: This…

Q: What are two factors which allow the gastrocnemius and soleus muscles to generate greater plantar…

A: The two main muscles that form the calf of the lower legs are gastrocnemius and soleus muscles. The…

Q: Which of the following is the prime mover for shoulder flexion? Group of answer choices Anterior…

A: At the shoulder joint, the movements possible are- flexion, extension, horizontal flexion,…

Q: The _________ is the strongest muscle of the body for its size Temporalis Messeter Stapedius…

A: In the case of flexion, the angle between two specific parts of the body gets reduced whereas, in…

Q: Based on the lever types we identified, are we at an overall mechanical disadvantage or advantage?…

A: During the backswing phase , kicking leg moves backwards by : Hip  extension up to 29° with respect…

Q: A synergist muscle always aids the antagonist True or False

A: Muscle usually acts in  pair. A pair of muscle contains an agonist and antagonist muscles.

Q: What are the qualities of the biceps femoris muscle fiber arrangements and their tendon attachments?

A: The muscle present at the posterior compartment of the thigh in the body is called the biceps…

Q: Jacob is competing in a chin-up competition. What type of musclecontractions are occurring in his…

A: The muscular system is defined as the organ system comprising the skeletal, cardiac, and smooth…

Q: classify any given joint action as a first-, second-, or thirdclass lever;

A: The term joint is used to describe the site where two bones of the skeletal system are attached to…

Q: Maximal muscle force changes continuously throughout the elbow flexion according to the joint angle.…

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Explain why the adductor longus muscle is a more effective hip adductor than the pectineus?

A: Muscles are in the form of contractile fibres varying in lengths and form muscular tissue. The…

Q: Flexor carpi ulnaris B- Palmaris longus C- Flexor digitorum profundus D- Extensor carpi radialis…

A: Skeletal system is a body system that form structural framework around the body and imparts…

Q: What implications does this all have on the ability to perform curls and pull-ups using "overhand"…

A: Introduction Muscles are soft tissues and have the ability to contract and therefore move the other…

Q: What leg muscles are contracted when you are sitting at your desk?

A: Crural muscles are those muscles that are present within the leg. For the movement of the foot,…

Q: Name the prime movers of elbow flexion and extension

A: Elbow joint is a joint of the upper limb which is formed by the articulation of the arm’s humerus…

Q: The flexors of the leg include all of the following except the: Question 29 options:   biceps…

A: INTRODUCTION: The correct option of question 29 and 30 are given in the second Step with their…

Q: What difference does foot plant or no foot plant make to the functions of the gluteus medius and…

A: Muscles are the body's greatest protein storage facility. Whenever dietary protein is scarce, the…

Q: describe how and why maintaining the position of full knee extension limits the ability to maximally…

A: The muscles that aid in knee movement originate from the hip bone. Therefore, the movements of the…

Q: Most of the muscles attached to the scapula are fixators, but a few do contribute to arm movement.…

A: Scapula is a flat triangular bone that is located on the back side of the trunk from the second to…

Q: Flex the shoulder? • Flex the elbow? Flex the wrist?

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: Which of the following muscles insert on the iliotibial tract? Gluteus maximus 2)Gluteus medius…

A: The iliotibial tract is a thick band of fascia that sudden spikes in demand for the lateral side of…

Q: A prime mover of thigh flexion at the hip is the (a) rectus femoris, (b) iliopsoas, (c) vastus…

A: Muscules are the epicenter of the muscular system of the body. The lower limb muscles are essential…

Q: Which of the following is a combination of two muscles which act to flex the thigh at the hip joint?…

A: Hip flexion is the movement of bringing the knee up towards the chest. It is a significant motion…

Q: The iliacus and the psoas major muscles are collectively known as the ____________ muscle because…

A: Answer:  MUSCLES = The iliacus and the psoas major muscles are found at the lower abdominal part of…

Q: what type of contraction happens when the wrist is in neutral position?

A: Introduction: The region of the body at which two or more bones unite to facilitate movement is…

Q: Consider the movements of plantar flexion and dorsiflexion. Propose a reason why there are far more…

A: The ankle joint observes four types of movements, two of which are dorsiflexion and plantarflexion.…

Q: - Origin of biceps -Tendon (short) Insertion of biceps s muscle (anterior side of arm) is an example…

A: The human body consists of different types of synovial joints such as the knee, elbow, spine,…

Q: Which of the following movements among the nine muscle groups? Flexion Extension  Abduction…

A: Various types of movements are allowed by the synovial joints present in the body. These movements…

Q: Which gluteal muscle is LEAST involved in abduction of the thigh? (That is, which one has the worst…

A: The human body consists of about 600 muscles which make the muscular system of the human body. The…

Q: Sit relaxed with your arm resting on the table, with the palm of the hand supinated. Flex the elbow…

A: Elbow joint is a type of synovial hinge joint that can perform extension and flexion  muscle…

Q: When running on the balls of one’s feet, what muscle resists dorsiflexion of the talocrural joint…

A: Talocrural joint This joint is formed between the distal tibia-fibula and the talus. It is also…

Q: Which is not a hip flexor?

A: The muscles of the hip joint are the muscles causing movements of the hip. They are divided into…

Q: During elbow flexion which muscles would NOT act to cause this action? Group of answer choices…

A: Elbow flexion occurs when the elbow is bent and the forearm is moved towards the body. Different…

Q: The primary action of the biceps brachii muscle of the anterior arm is to flex the forearm at the…

A: Biceps brachii is a major muscle present in the upper arm. This muscle supports both the shoulder…

Q: Which of the following muscles abducts the thigh at the hip joint? O gluteus maximus gracilis…

A: Muscles have an origin and an insertion on bony structures. On contraction, the insertion of the…

Q: - Origin of biceps -Tendon (short) Insertion of biceps The triceps (posterior side of arm) is an…

A: Lever systems have two main functions; firstly to extend the resistance which will be removed by a…

Q: What muscles are responsible for thigh extension? Which of these is the prime mover of thigh…

A: The tissue is a group of cells that have a similar structure and function. There are four types of…