(9/29/25) formative assessment assignment: chapter 6 the muscular system part 3 (suggested
10 of 10
muscles of the upper limb
the upper limb muscles fall into three groups. the first group includes muscles that arise from the shoulder girdle and cross the shoulder joint to (1.
) into the humerus (see figures 6.17 and 6.18a). we have already considered these muscles, which move the arm - they are the pectoralis
major, latissimus dorsi, and deltoid.
the second group causes movement at the elbow joint. these muscles enclose the (2.
) and insert on the forearm bones. in this section
we will focus on the muscles of this second group.
the third group of upper limb muscles includes the muscles of the (3.
), which insert on the hand bones and cause their movement. the
muscles of this last group are thin and spindle - shaped, and there are many of them. we will not consider them here except to mention their general
naming and function. as a rule, the forearm (4.
) have names that reflect their activities. for example, the flexor carpi and flexor digitorum
muscles, found on the anterior aspect of the forearm, flex the wrist and fingers, respectively. the extensor carpi and extensor digitorum muscles,
found on the lateral and (5.
) aspect of the forearm, extend the same structures. (table 6.4 and figure 6.23 briefly describe some of these
muscles; see pp. 215, 217).

o 1. muscles 2. posterior 3. insert 4. humerus 5. forearm
o 1. humerus 2. forearm 3. muscles 4. posterior 5. insert
o 1. forearm 2. muscles 3. posterior 4. insert 5. humerus
o 1. posterior 2. insert 3. humerus 4. forearm 5. muscles
o 1. insert 2. humerus 3. forearm 4. muscles 5. posterior

Question

(9/29/25) formative assessment assignment: chapter 6 the muscular system part 3 (suggested
10 of 10
muscles of the upper limb
the upper limb muscles fall into three groups. the first group includes muscles that arise from the shoulder girdle and cross the shoulder joint to (1.
) into the humerus (see figures 6.17 and 6.18a). we have already considered these muscles, which move the arm - they are the pectoralis
major, latissimus dorsi, and deltoid.
the second group causes movement at the elbow joint. these muscles enclose the (2.
) and insert on the forearm bones. in this section
we will focus on the muscles of this second group.
the third group of upper limb muscles includes the muscles of the (3.
), which insert on the hand bones and cause their movement. the
muscles of this last group are thin and spindle - shaped, and there are many of them. we will not consider them here except to mention their general
naming and function. as a rule, the forearm (4.
) have names that reflect their activities. for example, the flexor carpi and flexor digitorum
muscles, found on the anterior aspect of the forearm, flex the wrist and fingers, respectively. the extensor carpi and extensor digitorum muscles,
found on the lateral and (5.
) aspect of the forearm, extend the same structures. (table 6.4 and figure 6.23 briefly describe some of these
muscles; see pp. 215, 217).

o 1. muscles 2. posterior 3. insert 4. humerus 5. forearm
o 1. humerus 2. forearm 3. muscles 4. posterior 5. insert
o 1. forearm 2. muscles 3. posterior 4. insert 5. humerus
o 1. posterior 2. insert 3. humerus 4. forearm 5. muscles
o 1. insert 2. humerus 3. forearm 4. muscles 5. posterior

Accepted Answer

# Brief Explanations:
The first group of upper - limb muscles arise from the shoulder girdle and cross the shoulder joint to insert into the humerus. The second group of muscles causes elbow - joint movement, encloses the humerus and inserts on the forearm bones. The third group includes muscles of the forearm which insert on hand bones. Forearm muscles have names related to their activities, and extensor carpi and extensor digitorum muscles are on the lateral and posterior aspects of the forearm.
# Answer:
1. insert 2. humerus 3. forearm 4. muscles 5. posterior

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