L13 Muscle Form and Concentric Action

Descripción

List the muscles described in this lecture and describe their general attachments to the skeleton. • Understand the relationship between muscle location, muscle contraction and joint movement. • Determine the ‘concentric action’ of these muscles.
Mer Scott
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Resumen del Recurso

Pregunta 1

Pregunta
Which muscle has two origins on the scapula, 3 bodies, and one insertion to the humerus?
Respuesta
  • Biceps brachii
  • Biceps femoris
  • Deltoid
  • Triceps brachii

Pregunta 2

Pregunta
The middle belly of the deltoid contributes most to adduction of the arm.
Respuesta
  • True
  • False

Pregunta 3

Pregunta
Choose the incorrect statement. EXCLUDE the knee joint for this question!
Respuesta
  • A muscle placed anterior over a joint allows flexion.
  • A muscle placed posterior to a joint allows extension.
  • A muscle medial to the joint allows abduction.

Pregunta 4

Pregunta
It is the triceps brachii which allows supination at the radioulnar joint.
Respuesta
  • True
  • False

Pregunta 5

Pregunta
Choose the correct statement about the triceps brachii.
Respuesta
  • It originates from the scapula and humerus, and inserts on the radius.
  • It originates from the scapula and humerus, and inserts on the ulna.
  • It originates from the scapula and clavicle, and inserts on the radius.
  • It originates from the scapula and clavicle, and inserts on the ulna.

Pregunta 6

Pregunta
Which muscle allows rotation of the hip and originates from the vertebrae and hip?
Respuesta
  • Iliopsoas
  • Gluteus Maximus
  • Biceps femoris
  • Semimembranosus

Pregunta 7

Pregunta
The gluteus maximus originates from the [blank_start]sacrum and the pelvis[blank_end], and inserts on the [blank_start]iliotibial band[blank_end]. It is the main contributor for [blank_start]extension[blank_end] of the leg/over the hip joint.
Respuesta
  • sacrum and the pelvis
  • sacrum and the femur
  • iliotibial band
  • tibia
  • femur
  • pelvis
  • extension
  • flexion

Pregunta 8

Pregunta
The quadriceps femoris originates from the [blank_start]pelvis and femur[blank_end], attaches to the [blank_start]tibia[blank_end] via the [blank_start]patellar tendon[blank_end], and allows extension of the knee.
Respuesta
  • pelvis and femur
  • femur
  • sacrum and pelvis
  • tibia
  • fibula
  • patellar tendon
  • iliotibial tendon

Pregunta 9

Pregunta
The hamstrings originate from the pelvis and femur, and insert in one place, on the tibia.
Respuesta
  • True
  • False

Pregunta 10

Pregunta
Where does the tibialis anterior insert and which motion does it elicit?
Respuesta
  • Medial tarsals, plantarflexion
  • Medial tarsals, dorsiflexion
  • Calcaneus tendon, plantarflexion
  • Calcaneus tendon, dorsiflexion

Pregunta 11

Pregunta
The triceps surae orginates from the femur, tibia, and fibula.
Respuesta
  • True
  • False
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