Portage Learning: Anatomy &
Physiology I Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What type of muscle is involuntary and found in the walls of hollow organs?
✔✔ Smooth muscle
What type of connective tissue connects bone to bone?
✔✔ Ligaments
What is the strongest and most rigid type of connective tissue?
✔✔ Bone tissue
What protein gives skin its toughness and waterproofing ability?
✔✔ Keratin
What pigment is responsible for skin color?
✔✔ Melanin
1
,What layer of the skin contains blood vessels and nerve endings?
✔✔ Dermis
What is the name of the outermost layer of the skin?
✔✔ Epidermis
What is the function of sebaceous glands?
✔✔ They secrete oil to lubricate the skin and hair
What part of the skeleton includes the skull, vertebral column, and thoracic cage?
✔✔ Axial skeleton
What bone is commonly referred to as the collarbone?
✔✔ Clavicle
Which bone forms the forehead?
✔✔ Frontal bone
2
,What is the name of the long bone of the upper arm?
✔✔ Humerus
Which bones make up the forearm?
✔✔ Radius and ulna
What is the function of red bone marrow?
✔✔ Blood cell production
What type of joint allows movement in all directions?
✔✔ Ball-and-socket joint
Which mineral is most abundant in bone tissue?
✔✔ Calcium
What type of muscle is attached to bones and is under voluntary control?
✔✔ Skeletal muscle
3
, What is the name of the contractile unit of a muscle fiber?
✔✔ Sarcomere
What ion is essential for muscle contraction?
✔✔ Calcium
Which molecule provides energy for muscle contraction?
✔✔ ATP
What is the name of the tissue that covers and separates muscles?
✔✔ Fascia
What happens during muscle fatigue?
✔✔ The muscle loses its ability to contract efficiently
What is the name of the neurotransmitter released at neuromuscular junctions?
✔✔ Acetylcholine
4
Physiology I Questions and Answers |
Latest Version | 2025/2026 | Correct &
Verified
What type of muscle is involuntary and found in the walls of hollow organs?
✔✔ Smooth muscle
What type of connective tissue connects bone to bone?
✔✔ Ligaments
What is the strongest and most rigid type of connective tissue?
✔✔ Bone tissue
What protein gives skin its toughness and waterproofing ability?
✔✔ Keratin
What pigment is responsible for skin color?
✔✔ Melanin
1
,What layer of the skin contains blood vessels and nerve endings?
✔✔ Dermis
What is the name of the outermost layer of the skin?
✔✔ Epidermis
What is the function of sebaceous glands?
✔✔ They secrete oil to lubricate the skin and hair
What part of the skeleton includes the skull, vertebral column, and thoracic cage?
✔✔ Axial skeleton
What bone is commonly referred to as the collarbone?
✔✔ Clavicle
Which bone forms the forehead?
✔✔ Frontal bone
2
,What is the name of the long bone of the upper arm?
✔✔ Humerus
Which bones make up the forearm?
✔✔ Radius and ulna
What is the function of red bone marrow?
✔✔ Blood cell production
What type of joint allows movement in all directions?
✔✔ Ball-and-socket joint
Which mineral is most abundant in bone tissue?
✔✔ Calcium
What type of muscle is attached to bones and is under voluntary control?
✔✔ Skeletal muscle
3
, What is the name of the contractile unit of a muscle fiber?
✔✔ Sarcomere
What ion is essential for muscle contraction?
✔✔ Calcium
Which molecule provides energy for muscle contraction?
✔✔ ATP
What is the name of the tissue that covers and separates muscles?
✔✔ Fascia
What happens during muscle fatigue?
✔✔ The muscle loses its ability to contract efficiently
What is the name of the neurotransmitter released at neuromuscular junctions?
✔✔ Acetylcholine
4
