Questions and Answers
Which two bones form the pectoral (shoulder) girdle?
Which bone forms the proximal segment of the upper limb?
What is the medial bone of the forearm called?
What type of bone classification applies to the upper limb bones?
Signup and view all the answers
Which of the following bones is found in the middle segment of the upper limb?
Signup and view all the answers
How many carpal bones are present in the wrist?
Signup and view all the answers
Which joint is primarily formed by the humerus?
Signup and view all the answers
Which of the following correctly describes the location of the radius and ulna?
Signup and view all the answers
What are the facets of the humerus?
Signup and view all the answers
What are the components of the intertubercular sulcus?
Signup and view all the answers
Which cavity does the head of the humerus articulate with?
Signup and view all the answers
Which direction is the head of the humerus oriented?
Signup and view all the answers
Which direction does the trochlear notch of the ulna face?
Signup and view all the answers
What is the direction of the lesser tubercle on the humerus?
Signup and view all the answers
What shape is the head of the radius?
Signup and view all the answers
What is the orientation of the radial notch on the proximal end of the ulna?
Signup and view all the answers
Which side of the humerus is the deltoid tuberosity directed toward?
Signup and view all the answers
Which feature distinguishes the proximal end of the humerus?
Signup and view all the answers
Which part of the radius is an attachment site for the interosseous membrane?
Signup and view all the answers
Which of the following correctly describes the side determination of the proximal humerus?
Signup and view all the answers
How does the shaft of the radius compare in terms of cross-section shape?
Signup and view all the answers
What structure articulates with the capitulum of the humerus?
Signup and view all the answers
What characteristic distinguishes the distal end of the radius compared to its proximal end?
Signup and view all the answers
Which part of the body does the radius belong to?
Signup and view all the answers
What is the 1st digit of the hand commonly referred to as?
Signup and view all the answers
Which digit is considered the 4th digit of the hand?
Signup and view all the answers
From lateral to medial, which digit is the little finger?
Signup and view all the answers
In the naming system of the hand's digits, the 2nd digit is known as what?
Signup and view all the answers
What is the order of the digits from lateral to medial?
Signup and view all the answers
What joint is formed by the articulation of the glenoid cavity and the head of the humerus?
Signup and view all the answers
Which surface of the scapula is directed posteriorly?
Signup and view all the answers
In which direction is the greater tubercle of the humerus directed?
Signup and view all the answers
Which structure directs superiorly on the scapula?
Signup and view all the answers
What is the anatomical position of the lesser tubercle of the humerus?
Signup and view all the answers
Which end of the clavicle articulates with the acromion of the scapula?
Signup and view all the answers
What type of bone is the humerus classified as?
Signup and view all the answers
What serves as the base for determining the side of the scapula?
Signup and view all the answers
Study Notes
Objectives of the Lab
- Understand types and general features of bones in the upper limb.
- Determine the right or left orientation of the bones.
- Identify joints formed by upper limb bones.
Bones of the Upper Limb
- Pectoral Girdle: Composed of the clavicle (anterior) and scapula (posterior).
- Proximal Segment (Arm): Humerus serves as the main bone.
- Middle Segment (Forearm): Consists of the ulna (medial) and radius (lateral).
- Distal Segment (Wrist): Comprised of 8 carpal bones.
Scapula
- Shape: Appears as an inverted triangle.
-
Orientation Features:
- Acromion process points superiorly.
- Spine of scapula oriented posteriorly.
- Glenoid cavity faces laterally.
-
Joints:
- Glenoid cavity articulates with the head of the humerus (shoulder joint).
- Acromial end connects with the acromion of the scapula (acromioclavicular joint).
Humerus
- Type: Long bone.
-
Key Features:
- Head directed medially.
- Notable anatomical landmarks include the anatomical neck, surgical neck, lesser tubercle (anterior), greater tubercle (lateral).
- Intertubercular sulcus has medial lip, floor, and lateral lip.
- Deltoid tuberosity directs laterally.
- Proximal End: Articulates with the scapula to form the shoulder joint.
Radius
- Position: Lateral bone of the forearm, constricted at the proximal end.
-
Proximal End Features:
- Head is disc-shaped, connecting with the humerus at the capitulum.
- Radial notch of the ulna accommodates the margin of the disc.
-
Shaft: Triangular cross-section with three borders (anterior, posterior, interosseous).
- The interosseous border serves as an attachment for interosseous membrane linking radius and ulna.
Ulna
-
Key Characteristics:
- Trochlear notch is oriented superiorly.
- Styloid process is directed inferiorly.
- Radial notch faces laterally.
Digits of the Hand
- Names of fingers from lateral to medial:
- 1st digit: Thumb (pollex).
- 2nd digit: Index finger.
- 3rd digit: Middle finger.
- 4th digit: Ring finger.
- 5th digit: Little finger (digit minimi).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
This quiz covers the essential aspects of the anatomy laboratory concerning the bones of the upper limb. Students will describe the types and general features of these bones, as well as learn to identify their sides (right or left). Gain a solid understanding of upper limb bone anatomy through focused questions.
