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Why do the three parts of the trapezius muscle have three different actions?
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Ch. 9 The Muscular System
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814
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TOC.tableOfContents
- Ch. 1 Introduction to Anatomy and Physiology24
- Ch. 2 The Chemistry of Life37
- Ch. 3 The Cell54
- Ch. 4 Histology46
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System35
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System41
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart28
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity41
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Non è quello che usi tu?Cambia libro di testo
Capitolo 9, Problema L2.1
Predict the location and function of the flexor digitorum profundus muscle based only on its name.
Guida verificata passo dopo passo1
Step 1: Break down the name 'flexor digitorum profundus' into its components. 'Flexor' indicates that the muscle is involved in flexion, which is the action of decreasing the angle between two body parts. 'Digitorum' refers to the digits, meaning fingers or toes. 'Profundus' means deep, suggesting the muscle is located deeper within the body compared to other muscles.
Step 2: Predict the location based on the term 'profundus.' Since it is a deep muscle, it is likely located beneath more superficial muscles in the forearm, as muscles controlling finger movement are typically found in the forearm.
Step 3: Predict the function based on the term 'flexor.' The muscle likely helps in flexing the fingers, meaning it assists in bending the fingers toward the palm.
Step 4: Consider the anatomical context of 'digitorum.' This suggests the muscle acts on multiple digits (fingers), likely contributing to flexion at the distal interphalangeal joints (the joints closest to the fingertips).
Step 5: Summarize the prediction: The flexor digitorum profundus is a deep muscle located in the forearm that functions to flex the fingers, particularly at the distal interphalangeal joints, allowing for gripping and fine motor movements.
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Muscle Anatomy
Understanding muscle anatomy is crucial for predicting the location and function of muscles. The flexor digitorum profundus is a deep muscle in the forearm that primarily flexes the fingers. Its name indicates that it is a flexor (a muscle that decreases the angle between body parts) and that it acts on the digits (fingers), specifically the distal phalanges.
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Introduction to Muscles and Muscle Tissue Example 1
Muscle Function
The function of a muscle is determined by its anatomical position and the joints it crosses. The flexor digitorum profundus is responsible for flexing the distal interphalangeal joints of the fingers, allowing for gripping and pinching actions. This function is essential for hand dexterity and overall hand movements.
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Percorso guidato
06:04Functional Groups
Nomenclature in Anatomy
Anatomical nomenclature provides insights into the characteristics and functions of muscles based on their names. The term 'profundus' suggests that this muscle is located deeper than other muscles, while 'flexor' indicates its role in flexion. Understanding these naming conventions helps in predicting muscle behavior and interactions within the musculoskeletal system.
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Pratica correlata
Domanda del libro di testo
If 'adductor' is part of the name of a muscle, what does that tell you about the muscle?
a. It is a wide muscle.
b. It is a long muscle.
c. It raises a body part.
d. It pulls a body part toward the midline.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
The common function of all types of muscle tissue is to generate tension.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
A property of all muscle cells is elasticity, which means that the tissue is able to stretch.
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The rectus femoris muscle originates from the anterior superior iliac spine and inserts into the tibial tuberosity. Predict its main actions with only this information.
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Explain how the diaphragm muscle is able to increase the size of the thoracic cavity even though it doesn't insert into a bone.
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