Table of Contents
- 1 Which disease has a characteristic way that the patient a child uses to get up from the floor?
- 2 Which muscle bends the lower arm toward the upper arm?
- 3 Which of the statements about mechanism of muscle contraction are correct?
- 4 What does a torn tendon feel like?
- 5 Why neostigmine is used for myasthenia gravis?
- 6 Which of the following movements could occur at the hip joint?
Which disease has a characteristic way that the patient a child uses to get up from the floor?
A tell-tale clinical characteristic for Duchenne muscular dystrophy (DMD) is Gowers’ sign. Children with Duchenne muscular dystrophy find it very hard to get up from a sitting or lying position on the floor. They first pull up to their hands and knees.
Which muscle bends the lower arm toward the upper arm?
biceps brachii
The biceps brachii bends the forearm toward the upper arm and is thus used in lifting and pulling movements. It also supinates the forearm (turns the palm forward or upward). The size of the biceps brachii is a conventional symbol of bodily strength.
Which is the characteristic symptom of myasthenia gravis quizlet?
The hallmark of myasthenia gravis is muscle weakness that worsens after periods of activity and improves after periods of rest. Certain muscles such as those that control eye and eyelid movement, facial expression, chewing, talking, and swallowing are often (but not always) involved in the disorder.
What type of body movement occurs in the lower leg when a person kicks a soccer ball forward?
Being a multiarticular movement, soccer kick is characterised by a proximal-to-distal motion of the lower limb segments of the kicking leg. Angular velocity is maximized first by the thigh, then by the shank and finally by the foot. This is accomplished by segmental and joint movements in multiple planes.
Which of the statements about mechanism of muscle contraction are correct?
(i) Acetylcholine is released when the neural signal reaches the motor end plate. (ii) Muscle contraction is initiated by a signal sent by CNS via a sensory neuron. (iii) During muscle contraction, isotropic band gets elongated. (iv) Repeated activation of the muscles can lead to lactic acid accumulation.
What does a torn tendon feel like?
Pain, tenderness, redness, warmth, and/or swelling near the injured tendon. Pain may increase with activity. Symptoms of tendon injury may affect the precise area where the injured tendon is located or may radiate out from the joint area, unlike arthritis pain, which tends to be confined to the joint.
What muscle flexes the lower arm?
Biceps Brachii
Muscle | Location | Function |
---|---|---|
Pectoralis Major | Anterior part of the chest | Flexes the upper arm and helps to abduct the upper arm |
Biceps Brachii | Upper arm to radius | Flexes the lower arm |
Triceps Brachii | Posterior arm to ulna | Extends the lower arm |
Brachioradialis |
What is the Coracobrachialis?
Coracobrachialis muscle is one of the three muscles that originates from to the coracoid process of the scapula. It is situated at the superomedial part of the humerus.
Why neostigmine is used for myasthenia gravis?
In most people with myasthenia gravis, the immune system blocks or damages these acetylcholine receptors. The acetylcholine cannot then attach to the receptor and so the muscle is less able to tighten. Neostigmine works by slowing the breakdown of acetylcholine when it is released from nerve endings.
Which of the following movements could occur at the hip joint?
The hip joint is a multiaxial joint and permits a wide range of motion; flexion, extension, abduction, adduction, external rotation, internal rotation and circumduction.