Anatomy and Cell Biology 3319 Lecture Notes - Lecture 27: Flexor Digitorum Profundus Muscle, Metacarpophalangeal Joint, Pennate Muscle
1 May 2018
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Lecture 27: The Pelvic Girdle and Muscles of Anterior Thigh
Objectives
● Review the bones of the hand and wrist
● Describe the 10 muscles of the posterior compartment of the forearm
● Describe the general organization of the intrinsic muscles of the hand
● Describe the 4 intrinsic muscles of the hand that moves the thumb
Review of the Intrinsic muscles of the hand
●Thenar muscles (4)
○ Move the thumb
●Hypothenar muscles (3)
○ Move the pinking
●Palmer muscles
○ Fine finger movements
○ 2 groups
○Lumbricals
■ Intrinsic muscles
■ Worm-like
■ Cords of muscles
■No bony attachments
● Originate from the tendons of the flexor digitorum profundus
● Insert into the extensor expansion (on the back of the hand)
■ Bring about flexion at the metacarpophalangeal joint (knuckle) and
extension at the interphalangeal joint (along the finger)
○Interosseous
■ Originate between the metacarpal bones
■ Fravel into the digests
■3 PAD (palmer)
● Superficial
● Adducts the fingers (bring to midline)
● Pennate muscle
■4 DAB (dorsal)
● Deeper
● Abduct the fingers (splay the fingers)
● Bipennate muscles
○ Attached to more than one bone at their origin
●Innervation
○ Median nerve
■ 3 most lateral thenar muscles
■ 2 lateral lumbricals
■ More lateral palm sensation
○ Ulnar nerve
■ 2 medial lumbricals
find more resources at oneclass.com
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■ All other intrinsic muscles of the hand
■ More medial palm sensation
○ Radial nerve
■ No motor function
■ Provides cutaneous sensation of the back of the lateral side of the hand
The Pelvic Girdle and Muscles of Anterior Thigh
Objective
● Describe the movement of the lower limb
● Describe the bony structure of the Lower Limb (Pelvic Girdle, Femur Tibia, Fibula and
Foot)
● Describe the organization of muscles of the thigh into 3 compartments
● Describe the 7 muscles of the anterior compartment of the thigh
○ Which muscle constitute the “quads” ?
The Pelvic
Girdle
● Pel
find more resources at oneclass.com
find more resources at oneclass.com
Document Summary
Lecture 27: the pelvic girdle and muscles of anterior thigh. Review the bones of the hand and wrist. Describe the 10 muscles of the posterior compartment of the forearm. Describe the general organization of the intrinsic muscles of the hand. Describe the 4 intrinsic muscles of the hand that moves the thumb. Review of the intrinsic muscles of the hand. Originate from the tendons of the flexor digitorum profundus. Insert into the extensor expansion (on the back of the hand) Bring about flexion at the metacarpophalangeal joint (knuckle) and extension at the interphalangeal joint (along the finger) Attached to more than one bone at their origin. All other intrinsic muscles of the hand. Provides cutaneous sensation of the back of the lateral side of the hand. The pelvic girdle and muscles of anterior thigh. Describe the movement of the lower limb. Describe the bony structure of the lower limb (pelvic girdle, femur tibia, fibula and.
