Art-labeling Activity The Pectoral Girdle and Associated Structures

12/2/21, 12:01 AM Lab 8 Assignment Correct Correct. The bones making up the arms and legs, along with the pectoral and pelvic girdles, which anchor the limbs on to the axial skeleton make up the appendicular skeleton. Art-labeling Activity: The Pectoral Girdle and Associated Structures Part A Drag the labels to the appropriate location in the figure. ANSWER: Reset Scapula Clavicle Help Manubrium Humerus Sternum Ribs Correct Art-labeling Activity: Bone Markings of the Scapula Part A Drag the labels to the appropriate location in the figure. ANSWER: 13/63 12/2/21, 12:01 AM Lab 8 Assignment Reset Coracoid process Superior angle Scapular spine Help Acromion Supraspinous fossa Lateral border Subscapular fossa Inferior angle Medial border Glenoid cavity (fossa) Infraspinous fossa Correct Lab Manual Exercise 8 Pre-lab Quiz Question 1 Part A Which bone articulates with the manubrium of the sternum? ANSWER: third rib clavicle scapula humerus Correct Lab Manual Exercise 8 Pre-lab Quiz Question 2 Part A What is the name for the thick, projecting ridge of bone on the posterior aspect of the scapula? ANSWER: 14/63 12/2/21, 12:01 AM Lab 8 Assignment acromion scapular spine coracoid process supraspinous fossa Correct Lab Manual Exercise 8 Post-lab Quiz Question 1 Part A Which of the following bones is located in the pectoral girdle? ANSWER: sternum ulna humerus scapula Correct Lab Manual Exercise 8 From the Book Pre-lab Quiz Question 1 Part A During this laboratory exercise, you will complete all the following activities except ANSWER: examine the bones of the pectoral girdle. compare the structure of the male and female bony pelvis. estimate a person's height by measuring the length of the femur. identify the carpal bones. observe how the ribs are connected to the sternum. Correct Lab Manual Exercise 8 From the Book Pre-lab Quiz Question 2 Part A The pectoral girdle is formed by the two clavicles and scapulae. ANSWER: True False Correct 15/63 12/2/21, 12:01 AM Lab 8 Assignment Lab Manual Exercise 8 From the Book Pre-lab Quiz Question 3 Part A The shoulder joint is formed by the articulation of the humerus and clavicle. ANSWER: True False Correct Ulna Video Questions Watch the animation, then answer the questions. Part A Where in the skeleton is the ulna located in reference to the humerus? Hint 1. Determine the location of the ulna in anatomic position. ANSWER: Distal Lateral Proximal Medial Correct Correct. The ulna is a bone in the forearm which is distal to the humerus in the upper arm. The humerus makes up the upper arm. Part B Identify the primary region of the ulna that forms the hinge joint with the humerus. Hint 1. Determine if the proximal or distal end of the ulna contacts the humerus. ANSWER: 16/63 12/2/21, 12:01 AM Lab 8 Assignment Olecranon fossa Olecranon process Trochlear notch Coronoid process Correct Correct. The trochlear notch of the ulna swings around the trochlea of the humerus, permitting flexion and extension at the elbow. Part C Identify the true statement about the head of the ulna. Hint 1. The location of the head of the ulna is unusual compared to the location of the head of most other bones. ANSWER: Found at the proximal end of the bone. Helps form the elbow joint. Found at the distal end of the bone. Helps form the pivot joint between the ulna and radius. Correct Correct. The head of a bone is typically found at the proximal end. The head of the ulna is at the distal end of the bone near the wrist. Part D Identify the projection found on distal end of the ulna. Hint 1. Does the distal end of the ulna form the elbow or the wrist? ANSWER: Styloid process Coronoid process Olecranon process Head Correct Correct. The styloid process of the ulna makes up the superficial bump seen on lateral surface of the wrist. Part E Identify the region of the ulna that articulates with the humerus when the forearm is in full extension. Hint 1. This region can be described as a projection. ANSWER: 17/63 12/2/21, 12:01 AM Lab 8 Assignment Trochlear notch Olecranon process Coronoid process Trochlea Correct Correct. When the forearm is in full extension the olecranon process of the ulna fits snuggly into the olecranon fossa of the humerus. Humerus Video Questions Watch the animation, then answer the questions. Part A Identify the landmark found on the proximal end of the humerus. Hint 1. Determine if the proximal end of the humerus is closer to the shoulder or elbow. ANSWER: Deltoid tuberosity Capitulum Greater tubercle Medial epicondyle Correct Correct. The greater tubercle is adjacent to the head of the humerus. It is the insertion site for some of the rotator cuff muscles. Part B Identify the depression found on the posterior surface of the distal humerus. Hint 1. This depression permits for extension of the forearm. ANSWER: 18/63 12/2/21, 12:01 AM Lab 8 Assignment Olecranon fossa Medial epicondyle Head Coronoid fossa Correct Correct. The olecranon fossa is the large depression at the distal end of the humerus. The olecranon fossa of the humerus together with the olecranon process of the ulna permit full extension of the forearm. Part C Identify the region of the humerus that articulates with the ulna, located between the medial epicondyle and capitulum. Hint 1. The ulna forms a hinge joint with this region of the humerus. ANSWER: Trochlea Lateral epicondyle Coronoid fossa Head Correct Correct. The trochlear notch of the ulna swings around the trochlea of the humerus forming the hinge joint of the elbow. Part D Which of the following landmarks is found on the distal end of the humerus? Hint 1. Does the distal end of the humerus form the shoulder or the elbow? ANSWER: Greater tubercle Neck Lesser tubercle Lateral epicondyle Correct Correct. The lateral epicondyle of the humerus is on the lateral distal surface of the bone. It serves as a site of muscle attachment. Part E What part of the humerus articulates with the scapula to form the shoulder joint? Hint 1. The shoulder joint is considered to be a ball and socket joint. ANSWER: 19/63 12/2/21, 12:01 AM Lab 8 Assignment Greater tubercle Trochlea Deltoid tuberosity Head Correct Correct. The head of the humerus articulates with the glenoid cavity of the scapulae to form the shoulder joint. Part F Which region of the skeleton contains the humerus? Hint 1. Recall the skeleton is divided into 2 major regions. ANSWER: Pectoral girdle Appendicular Rib cage Axial Correct Correct. The appendicular skeleton consists of all of the bones that make up the arm, hand, leg, and foot. Radius Video Questions Watch the animation, then answer the questions. Part A Where is the radius located in reference to the ulna? Hint 1. Its relative location to the ulna is determined in anatomical position. ANSWER: 20/63 12/2/21, 12:01 AM Lab 8 Assignment Medial Lateral Distal Proximal Correct Correct. The radius runs parallel to the ulna on the lateral surface of the forearm. Part B Identify the region of the radius that articulates with the ulna. Hint 1. The proximal portion of the radius articulates with the ulna. ANSWER: Styloid process Head Radial tuberosity Neck Correct Correct. The round, flat disc shaped head of the radius pivots around the ulna at the radial notch of the ulna, allowing supination and pronation of the forearm. Part C Which of the following regions of the radius help form the wrist joint? Hint 1. Determine whether the proximal or distal end of the radius forms the wrist. ANSWER: Styloid process Radial tuberosity Head Neck Correct Correct. The styloid process of the radius is a pointed elongation of the epiphysis at the distal end of the bone. It articulates with the carpals at the wrist. Part D Which digit is the radius closest to? Hint 1. Determine how the digits are numbered. Is the thumb digit 1 or digit 5? ANSWER: 21/63 12/2/21, 12:01 AM Lab 8 Assignment 1 4 3 5 Correct Correct. The radius runs parallel to the ulna on the same side as the thumb (digit 1). Part E What type of joint is formed between the radius and ulna? Hint 1. This type of joint is considered a synovial joint. ANSWER: Hinge Ball and socket Synchondrosis Pivot Correct Correct. The head of the radius pivots around the ulna at the radial notch, allowing supination and pronation of the forearm. Part F Identify the type of movement enabled by the articulation between the radius and ulna at the elbow. Hint 1. Envision the motion possible with a disc shaped articular surface that pivots within a notch. ANSWER: Abduction Inversion Supination Flexion Correct Correct. The head of the radius pivots around the ulna permitting supination and pronation of the forearm. 22/63